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| <nisn:InterestAndInvestmentIncome contextRef="c9" decimals="0" unitRef="usd"> 1249509 </nisn:InterestAndInvestmentIncome> |
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| <us-gaap:OtherOperatingIncomeExpenseNet contextRef="c9" decimals="0" unitRef="usd"> 1512562 </us-gaap:OtherOperatingIncomeExpenseNet> |
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| <us-gaap:OtherNonoperatingIncomeExpense contextRef="c9" decimals="0" unitRef="usd"> 2762071 </us-gaap:OtherNonoperatingIncomeExpense> |
| <us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest contextRef="c0" decimals="0" unitRef="usd"> 13977496 </us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest> |
| <us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest contextRef="c9" decimals="0" unitRef="usd"> 18065457 </us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest> |
| <us-gaap:IncomeTaxExpenseBenefit contextRef="c0" decimals="0" unitRef="usd"> 2610535 </us-gaap:IncomeTaxExpenseBenefit> |
| <us-gaap:IncomeTaxExpenseBenefit contextRef="c9" decimals="0" unitRef="usd"> 3414449 </us-gaap:IncomeTaxExpenseBenefit> |
| <us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest contextRef="c0" decimals="0" unitRef="usd"> 11366961 </us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest> |
| <us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest contextRef="c9" decimals="0" unitRef="usd"> 14651008 </us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest> |
| <us-gaap:DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax contextRef="c9" decimals="0" unitRef="usd"> -292069 </us-gaap:DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax> |
| <us-gaap:DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax contextRef="c9" decimals="0" unitRef="usd"> -292069 </us-gaap:DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax> |
| <us-gaap:ProfitLoss contextRef="c0" decimals="0" unitRef="usd"> 11366961 </us-gaap:ProfitLoss> |
| <us-gaap:ProfitLoss contextRef="c9" decimals="0" unitRef="usd"> 14358939 </us-gaap:ProfitLoss> |
| <us-gaap:IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity contextRef="c0" decimals="0" unitRef="usd"> 47574 </us-gaap:IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity> |
| <us-gaap:IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity contextRef="c9" decimals="0" unitRef="usd"> 330620 </us-gaap:IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity> |
| <us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest contextRef="c9" decimals="0" unitRef="usd"> -143114 </us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest> |
| <us-gaap:NetIncomeLoss contextRef="c0" decimals="0" unitRef="usd"> 11319387 </us-gaap:NetIncomeLoss> |
| <us-gaap:NetIncomeLoss contextRef="c9" decimals="0" unitRef="usd"> 14171433 </us-gaap:NetIncomeLoss> |
| <us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent contextRef="c0" decimals="0" unitRef="usd"> -8175831 </us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent> |
| <us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent contextRef="c9" decimals="0" unitRef="usd"> -8182987 </us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent> |
| <us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest contextRef="c0" decimals="0" unitRef="usd"> 3143556 </us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest> |
| <us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest contextRef="c9" decimals="0" unitRef="usd"> 5988446 </us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest> |
| <us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest contextRef="c0" decimals="0" unitRef="usd"> 1487 </us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest> |
| <us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest contextRef="c9" decimals="0" unitRef="usd"> -6658 </us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest> |
| <us-gaap:ComprehensiveIncomeNetOfTax contextRef="c0" decimals="0" unitRef="usd"> 3142069 </us-gaap:ComprehensiveIncomeNetOfTax> |
| <us-gaap:ComprehensiveIncomeNetOfTax contextRef="c9" decimals="0" unitRef="usd"> 5995104 </us-gaap:ComprehensiveIncomeNetOfTax> |
| <us-gaap:IncomeLossFromContinuingOperationsPerBasicShare contextRef="c0" decimals="2" unitRef="usdPershares"> 2.87 </us-gaap:IncomeLossFromContinuingOperationsPerBasicShare> |
| <us-gaap:IncomeLossFromContinuingOperationsPerBasicShare contextRef="c9" decimals="2" unitRef="usdPershares"> 3.67 </us-gaap:IncomeLossFromContinuingOperationsPerBasicShare> |
| <us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare contextRef="c9" decimals="2" unitRef="usdPershares"> -0.07 </us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare> |
| <us-gaap:EarningsPerShareBasic contextRef="c0" decimals="2" unitRef="usdPershares"> 2.87 </us-gaap:EarningsPerShareBasic> |
| <us-gaap:EarningsPerShareBasic contextRef="c9" decimals="2" unitRef="usdPershares"> 3.6 </us-gaap:EarningsPerShareBasic> |
| <us-gaap:WeightedAverageNumberOfSharesOutstandingBasic contextRef="c0" decimals="INF" unitRef="shares"> 3943288 </us-gaap:WeightedAverageNumberOfSharesOutstandingBasic> |
| <us-gaap:WeightedAverageNumberOfSharesOutstandingBasic contextRef="c9" decimals="INF" unitRef="shares"> 3991263 </us-gaap:WeightedAverageNumberOfSharesOutstandingBasic> |
| <us-gaap:ProfitLoss contextRef="c0" decimals="0" unitRef="usd"> 11366961 </us-gaap:ProfitLoss> |
| <us-gaap:ProfitLoss contextRef="c9" decimals="0" unitRef="usd"> 14358939 </us-gaap:ProfitLoss> |
| <us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTax contextRef="c9" decimals="0" unitRef="usd"> -292069 </us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTax> |
| <us-gaap:IncomeLossFromContinuingOperations contextRef="c0" decimals="0" unitRef="usd"> 11366961 </us-gaap:IncomeLossFromContinuingOperations> |
| <us-gaap:IncomeLossFromContinuingOperations contextRef="c9" decimals="0" unitRef="usd"> 14651008 </us-gaap:IncomeLossFromContinuingOperations> |
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| <us-gaap:DepreciationAndAmortization contextRef="c9" decimals="0" unitRef="usd"> 639002 </us-gaap:DepreciationAndAmortization> |
| <us-gaap:ShareBasedCompensation contextRef="c9" decimals="0" unitRef="usd"> 125630 </us-gaap:ShareBasedCompensation> |
| <us-gaap:ProvisionForDoubtfulAccounts contextRef="c0" decimals="0" unitRef="usd"> -234120 </us-gaap:ProvisionForDoubtfulAccounts> |
| <us-gaap:GainLossOnSaleOfPropertyPlantEquipment contextRef="c0" decimals="0" unitRef="usd"> -4178 </us-gaap:GainLossOnSaleOfPropertyPlantEquipment> |
| <us-gaap:IncomeLossFromEquityMethodInvestments contextRef="c0" decimals="0" unitRef="usd"> 7296 </us-gaap:IncomeLossFromEquityMethodInvestments> |
| <us-gaap:IncomeLossFromEquityMethodInvestments contextRef="c9" decimals="0" unitRef="usd"> -218929 </us-gaap:IncomeLossFromEquityMethodInvestments> |
| <us-gaap:DeferredIncomeTaxExpenseBenefit contextRef="c0" decimals="0" unitRef="usd"> -51609 </us-gaap:DeferredIncomeTaxExpenseBenefit> |
| <us-gaap:DeferredIncomeTaxExpenseBenefit contextRef="c9" decimals="0" unitRef="usd"> -92798 </us-gaap:DeferredIncomeTaxExpenseBenefit> |
| <us-gaap:IssuanceOfStockAndWarrantsForServicesOrClaims contextRef="c9" decimals="0" unitRef="usd"> 185000 </us-gaap:IssuanceOfStockAndWarrantsForServicesOrClaims> |
| <us-gaap:IncreaseDecreaseInAccountsReceivable contextRef="c0" decimals="0" unitRef="usd"> 11089756 </us-gaap:IncreaseDecreaseInAccountsReceivable> |
| <us-gaap:IncreaseDecreaseInAccountsReceivable contextRef="c9" decimals="0" unitRef="usd"> 4310119 </us-gaap:IncreaseDecreaseInAccountsReceivable> |
| <nisn:IncreaseDecreaseInAdvanceToSuppliers contextRef="c0" decimals="0" unitRef="usd"> -28012573 </nisn:IncreaseDecreaseInAdvanceToSuppliers> |
| <nisn:IncreaseDecreaseInAdvanceToSuppliers contextRef="c9" decimals="0" unitRef="usd"> 15246921 </nisn:IncreaseDecreaseInAdvanceToSuppliers> |
| <us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets contextRef="c0" decimals="0" unitRef="usd"> 3140645 </us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets> |
| <us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets contextRef="c9" decimals="0" unitRef="usd"> -1444248 </us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets> |
| <nisn:IncreaseDecreaseInOperatingLeaseRightofuseAssets contextRef="c9" decimals="0" unitRef="usd"> 3115440 </nisn:IncreaseDecreaseInOperatingLeaseRightofuseAssets> |
| <us-gaap:IncreaseDecreaseInOtherReceivables contextRef="c0" decimals="0" unitRef="usd"> -3411356 </us-gaap:IncreaseDecreaseInOtherReceivables> |
| <us-gaap:IncreaseDecreaseInOtherReceivables contextRef="c9" decimals="0" unitRef="usd"> -32564078 </us-gaap:IncreaseDecreaseInOtherReceivables> |
| <us-gaap:IncreaseDecreaseInInventories contextRef="c0" decimals="0" unitRef="usd"> 18988807 </us-gaap:IncreaseDecreaseInInventories> |
| <us-gaap:IncreaseDecreaseInInventories contextRef="c9" decimals="0" unitRef="usd"> 17968203 </us-gaap:IncreaseDecreaseInInventories> |
| <nisn:IncreaseDecreaseInAccountsPayables contextRef="c0" decimals="0" unitRef="usd"> -1839578 </nisn:IncreaseDecreaseInAccountsPayables> |
| <nisn:IncreaseDecreaseInAccountsPayables contextRef="c9" decimals="0" unitRef="usd"> -25094299 </nisn:IncreaseDecreaseInAccountsPayables> |
| <nisn:IncreaseDecreaseInCustomerAdvance contextRef="c0" decimals="0" unitRef="usd"> 41474328 </nisn:IncreaseDecreaseInCustomerAdvance> |
| <nisn:IncreaseDecreaseInCustomerAdvance contextRef="c9" decimals="0" unitRef="usd"> 9408745 </nisn:IncreaseDecreaseInCustomerAdvance> |
| <us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable contextRef="c0" decimals="0" unitRef="usd"> 754075 </us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable> |
| <us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable contextRef="c9" decimals="0" unitRef="usd"> -6205647 </us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable> |
| <us-gaap:IncreaseDecreaseInOtherAccountsPayable contextRef="c0" decimals="0" unitRef="usd"> 4016393 </us-gaap:IncreaseDecreaseInOtherAccountsPayable> |
| <us-gaap:IncreaseDecreaseInOtherAccountsPayable contextRef="c9" decimals="0" unitRef="usd"> -735659 </us-gaap:IncreaseDecreaseInOtherAccountsPayable> |
| <us-gaap:IncreaseDecreaseInPayablesToBrokerDealers contextRef="c0" decimals="0" unitRef="usd"> 2165239 </us-gaap:IncreaseDecreaseInPayablesToBrokerDealers> |
| <us-gaap:IncreaseDecreaseInPayablesToBrokerDealers contextRef="c9" decimals="0" unitRef="usd"> -19913058 </us-gaap:IncreaseDecreaseInPayablesToBrokerDealers> |
| <us-gaap:IncreaseDecreaseInOperatingLeaseLiability contextRef="c0" decimals="0" unitRef="usd"> -490946 </us-gaap:IncreaseDecreaseInOperatingLeaseLiability> |
| <us-gaap:IncreaseDecreaseInOperatingLeaseLiability contextRef="c9" decimals="0" unitRef="usd"> 3041808 </us-gaap:IncreaseDecreaseInOperatingLeaseLiability> |
| <us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities contextRef="c0" decimals="0" unitRef="usd"> 567503 </us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities> |
| <us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities contextRef="c9" decimals="0" unitRef="usd"> 340313 </us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities> |
| <us-gaap:NetCashProvidedByUsedInOperatingActivitiesContinuingOperations contextRef="c0" decimals="0" unitRef="usd"> 57224015 </us-gaap:NetCashProvidedByUsedInOperatingActivitiesContinuingOperations> |
| <us-gaap:NetCashProvidedByUsedInOperatingActivitiesContinuingOperations contextRef="c9" decimals="0" unitRef="usd"> -30063383 </us-gaap:NetCashProvidedByUsedInOperatingActivitiesContinuingOperations> |
| <us-gaap:CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations contextRef="c9" decimals="0" unitRef="usd"> -356347 </us-gaap:CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations> |
| <us-gaap:NetCashProvidedByUsedInOperatingActivities contextRef="c0" decimals="0" unitRef="usd"> 57224015 </us-gaap:NetCashProvidedByUsedInOperatingActivities> |
| <us-gaap:NetCashProvidedByUsedInOperatingActivities contextRef="c9" decimals="0" unitRef="usd"> -30419730 </us-gaap:NetCashProvidedByUsedInOperatingActivities> |
| <us-gaap:PaymentsToAcquirePropertyPlantAndEquipment contextRef="c0" decimals="0" unitRef="usd"> 226403 </us-gaap:PaymentsToAcquirePropertyPlantAndEquipment> |
| <us-gaap:PaymentsToAcquirePropertyPlantAndEquipment contextRef="c9" decimals="0" unitRef="usd"> 178953 </us-gaap:PaymentsToAcquirePropertyPlantAndEquipment> |
| <us-gaap:PaymentsToAcquireIntangibleAssets contextRef="c0" decimals="0" unitRef="usd"> 43534 </us-gaap:PaymentsToAcquireIntangibleAssets> |
| <us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired contextRef="c9" decimals="0" unitRef="usd"> 78944 </us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired> |
| <us-gaap:PaymentsToAcquireLongtermInvestments contextRef="c9" decimals="0" unitRef="usd"> 2985921 </us-gaap:PaymentsToAcquireLongtermInvestments> |
| <us-gaap:ProceedsFromSaleOfShortTermInvestments contextRef="c0" decimals="0" unitRef="usd"> 53004461 </us-gaap:ProceedsFromSaleOfShortTermInvestments> |
| <us-gaap:ProceedsFromSaleOfShortTermInvestments contextRef="c9" decimals="0" unitRef="usd"> 49210720 </us-gaap:ProceedsFromSaleOfShortTermInvestments> |
| <us-gaap:ProceedsFromSaleOfLongtermInvestments contextRef="c0" decimals="0" unitRef="usd"> 2792763 </us-gaap:ProceedsFromSaleOfLongtermInvestments> |
| <us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt contextRef="c0" decimals="0" unitRef="usd"> 14204625 </us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt> |
| <us-gaap:PaymentsToAcquireShortTermInvestments contextRef="c0" decimals="0" unitRef="usd"> 60463319 </us-gaap:PaymentsToAcquireShortTermInvestments> |
| <us-gaap:PaymentsToAcquireShortTermInvestments contextRef="c9" decimals="0" unitRef="usd"> 21825681 </us-gaap:PaymentsToAcquireShortTermInvestments> |
| <nisn:RepaymentsFromLoansToThirdParties contextRef="c0" decimals="0" unitRef="usd"> 471604 </nisn:RepaymentsFromLoansToThirdParties> |
| <nisn:PaymentsMadeForLoansToThirdParties contextRef="c0" decimals="0" unitRef="usd"> -16756578 </nisn:PaymentsMadeForLoansToThirdParties> |
| <us-gaap:NetCashProvidedByUsedInInvestingActivitiesContinuingOperations contextRef="c0" decimals="0" unitRef="usd"> -7016381 </us-gaap:NetCashProvidedByUsedInInvestingActivitiesContinuingOperations> |
| <us-gaap:NetCashProvidedByUsedInInvestingActivitiesContinuingOperations contextRef="c9" decimals="0" unitRef="usd"> 24141221 </us-gaap:NetCashProvidedByUsedInInvestingActivitiesContinuingOperations> |
| <us-gaap:NetCashProvidedByUsedInInvestingActivities contextRef="c0" decimals="0" unitRef="usd"> -7016381 </us-gaap:NetCashProvidedByUsedInInvestingActivities> |
| <us-gaap:NetCashProvidedByUsedInInvestingActivities contextRef="c9" decimals="0" unitRef="usd"> 24141221 </us-gaap:NetCashProvidedByUsedInInvestingActivities> |
| <us-gaap:ProceedsFromShortTermDebt contextRef="c0" decimals="0" unitRef="usd"> 139638 </us-gaap:ProceedsFromShortTermDebt> |
| <us-gaap:RepaymentsOfShortTermDebt contextRef="c0" decimals="0" unitRef="usd"> 11912 </us-gaap:RepaymentsOfShortTermDebt> |
| <us-gaap:RepaymentsOfShortTermDebt contextRef="c9" decimals="0" unitRef="usd"> 773960 </us-gaap:RepaymentsOfShortTermDebt> |
| <nisn:ProceedsFromThirdPartyLoans contextRef="c0" decimals="0" unitRef="usd"> 1954934 </nisn:ProceedsFromThirdPartyLoans> |
| <nisn:ProceedsFromThirdPartyLoans contextRef="c9" decimals="0" unitRef="usd"> 3363632 </nisn:ProceedsFromThirdPartyLoans> |
| <us-gaap:ProceedsFromRepaymentsOfRelatedPartyDebt contextRef="c0" decimals="0" unitRef="usd"> -8000000 </us-gaap:ProceedsFromRepaymentsOfRelatedPartyDebt> |
| <us-gaap:ProceedsFromRepaymentsOfRelatedPartyDebt contextRef="c9" decimals="0" unitRef="usd"> -1010517 </us-gaap:ProceedsFromRepaymentsOfRelatedPartyDebt> |
| <us-gaap:RepaymentsOfLongTermDebt contextRef="c0" decimals="0" unitRef="usd"> 2252363 </us-gaap:RepaymentsOfLongTermDebt> |
| <us-gaap:ProceedsFromRelatedPartyDebt contextRef="c9" decimals="0" unitRef="usd"> 8049187 </us-gaap:ProceedsFromRelatedPartyDebt> |
| <us-gaap:ProceedsFromContributedCapital contextRef="c0" decimals="0" unitRef="usd"> 37116 </us-gaap:ProceedsFromContributedCapital> |
| <us-gaap:PaymentsForRepurchaseOfCommonStock contextRef="c0" decimals="0" unitRef="usd"> 17514 </us-gaap:PaymentsForRepurchaseOfCommonStock> |
| <us-gaap:NetCashProvidedByUsedInFinancingActivitiesContinuingOperations contextRef="c0" decimals="0" unitRef="usd"> -8150101 </us-gaap:NetCashProvidedByUsedInFinancingActivitiesContinuingOperations> |
| <us-gaap:NetCashProvidedByUsedInFinancingActivitiesContinuingOperations contextRef="c9" decimals="0" unitRef="usd"> 9628342 </us-gaap:NetCashProvidedByUsedInFinancingActivitiesContinuingOperations> |
| <us-gaap:NetCashProvidedByUsedInFinancingActivities contextRef="c0" decimals="0" unitRef="usd"> -8150101 </us-gaap:NetCashProvidedByUsedInFinancingActivities> |
| <us-gaap:NetCashProvidedByUsedInFinancingActivities contextRef="c9" decimals="0" unitRef="usd"> 9628342 </us-gaap:NetCashProvidedByUsedInFinancingActivities> |
| <us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="c0" decimals="0" unitRef="usd"> -2738394 </us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents> |
| <us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="c9" decimals="0" unitRef="usd"> -3539963 </us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents> |
| <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect contextRef="c0" decimals="0" unitRef="usd"> 39319139 </us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect> |
| <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect contextRef="c9" decimals="0" unitRef="usd"> -190130 </us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect> |
| <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations contextRef="c10" decimals="0" unitRef="usd"> 356347 </us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations> |
| <nisn:NETINCREASEDECREASEINCASHANDCASHEQUIVALENTSFROMCONTINUINGOP contextRef="c1" decimals="0" unitRef="usd"> 39319139 </nisn:NETINCREASEDECREASEINCASHANDCASHEQUIVALENTSFROMCONTINUINGOP> |
| <nisn:NETINCREASEDECREASEINCASHANDCASHEQUIVALENTSFROMCONTINUINGOP contextRef="c10" decimals="0" unitRef="usd"> 166217 </nisn:NETINCREASEDECREASEINCASHANDCASHEQUIVALENTSFROMCONTINUINGOP> |
| <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="c2" decimals="0" unitRef="usd"> 67318573 </us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents> |
| <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="c11" decimals="0" unitRef="usd"> 91627041 </us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents> |
| <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="c1" decimals="0" unitRef="usd"> 106637712 </us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents> |
| <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="c10" decimals="0" unitRef="usd"> 91793258 </us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents> |
| <us-gaap:IncomeTaxesPaid contextRef="c0" decimals="0" unitRef="usd"> 1560580 </us-gaap:IncomeTaxesPaid> |
| <us-gaap:IncomeTaxesPaid contextRef="c9" decimals="0" unitRef="usd"> 8163616 </us-gaap:IncomeTaxesPaid> |
| <us-gaap:InterestPaidNet contextRef="c0" decimals="0" unitRef="usd"> 11912 </us-gaap:InterestPaidNet> |
| <us-gaap:InterestPaidNet contextRef="c9" decimals="0" unitRef="usd"> 5420 </us-gaap:InterestPaidNet> |
| <nisn:AccruedLeaseLiabilities contextRef="c0" decimals="0" unitRef="usd"> 2781797 </nisn:AccruedLeaseLiabilities> |
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