v3.20.1
Consolidated Statements Of Cash Flows - USD ($)
|
12 Months Ended |
|
|
|
| Cash flows from operating activities: |
|
|
|
| Net earnings |
$ 42,220,000
|
$ 39,940,000
|
$ 52,959,000
|
| Adjustments to reconcile net earnings to net cash provided by operating activities: |
|
|
|
| Provision for depreciation |
3,606,000
|
4,052,000
|
7,258,000
|
| Intangibles amortization |
83,000
|
2,167,000
|
2,630,000
|
| Deferred income tax (benefit) |
(224,000)
|
(121,000)
|
(4,001,000)
|
| Noncash income tax expense |
1,370,000
|
|
|
| Net loss (gain) and impairment on divestiture of businesses |
|
2,528,000
|
|
| Net loss (gain) and impairment on divestiture of businesses from discontinued operations |
|
|
(11,413,000)
|
| Net gain on involuntary conversion of machinery and equipment |
|
|
(2,713,000)
|
| Loss on disposal and impairment of property, plant and equipment |
322,000
|
163,000
|
248,000
|
| Provision for doubtful accounts |
7,000
|
458,000
|
70,000
|
| Non-cash retirement plan expense |
680,000
|
698,000
|
675,000
|
| Gain on legal settlement |
(2,300,000)
|
|
|
| Other |
464,000
|
229,000
|
238,000
|
| Changes in operating accounts, net of effects of acquisition: |
|
|
|
| Accounts receivable, net |
10,915,000
|
11,546,000
|
1,848,000
|
| Inventories |
(34,241,000)
|
6,821,000
|
(8,730,000)
|
| Other assets and current assets |
(2,803,000)
|
4,067,000
|
(806,000)
|
| Accounts payable and accrued liabilities |
(11,561,000)
|
6,066,000
|
(11,462,000)
|
| Federal and state income taxes receivable/payable |
1,045,000
|
(2,366,000)
|
(2,523,000)
|
| Net cash provided by operating activities |
9,583,000
|
76,248,000
|
24,278,000
|
| Cash flows from investing activities: |
|
|
|
| Marketable securities purchased |
(105,409,000)
|
(163,271,000)
|
(192,584,000)
|
| Marketable securities - maturities and sales |
161,420,000
|
173,060,000
|
132,752,000
|
| Proceeds from divestiture of businesses, net of cash paid |
|
9,410,000
|
64,033,000
|
| Purchase of property, plant and equipment |
(3,138,000)
|
(8,686,000)
|
(7,396,000)
|
| Notes issued |
|
(2,300,000)
|
|
| Proceeds from note receivable |
2,146,000
|
|
|
| Acquisition of business, net of cash acquired |
(3,733,000)
|
|
|
| Proceeds from legal settlement |
2,300,000
|
|
|
| Proceeds from insurance settlement |
807,000
|
2,630,000
|
2,104,000
|
| Acquisition of intangible assets |
|
|
(1,000,000)
|
| Sale of property, plant and equipment |
767,000
|
1,000
|
1,000
|
| Net cash provided by (used in) investing activities |
55,160,000
|
10,844,000
|
(2,090,000)
|
| Cash flows from financing activities: |
|
|
|
| Dividends paid |
(42,087,000)
|
(41,989,000)
|
(38,405,000)
|
| Proceeds from sale of treasury stock |
518,000
|
528,000
|
519,000
|
| Other |
(442,000)
|
(6,000)
|
(114,000)
|
| Net cash used in financing activities |
(42,011,000)
|
(41,467,000)
|
(38,000,000)
|
| Net increase (decrease) in cash and cash equivalents |
22,732,000
|
45,625,000
|
(15,812,000)
|
| Cash and cash equivalents at beginning of year |
56,847,000
|
11,222,000
|
27,034,000
|
| Cash and cash equivalents at end of year |
79,579,000
|
56,847,000
|
11,222,000
|
| Supplemental disclosures of cash flow information: |
|
|
|
| Income taxes |
$ 10,187,000
|
$ 14,968,000
|
$ 32,837,000
|
| X |
- DefinitionGain on involuntary converstion of machinery and equipment.
| Name: |
npk_GainOnInvoluntaryConversionOfMachineryAndEquipment |
| Namespace Prefix: |
npk_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
duration |
|
| X |
- DefinitionNoncash retirement plan expense
| Name: |
npk_NoncashRetirementPlanExpense |
| Namespace Prefix: |
npk_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- DefinitionProceeds from Legal Settlements, Investing Activities
| Name: |
npk_ProceedsFromLegalSettlementsInvestingActivities |
| Namespace Prefix: |
npk_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- References
+ Details
| Name: |
us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:stringItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionThe aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.
| Name: |
us-gaap_AmortizationOfIntangibleAssets |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
| Name: |
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
instant |
|
| X |
- DefinitionAmount of increase (decrease) in cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; excluding effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
| Name: |
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- DefinitionThe amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.
| Name: |
us-gaap_Depreciation |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.
| Name: |
us-gaap_GainLossOnSaleOfBusiness |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value.
| Name: |
us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
duration |
|
| X |
- DefinitionThe increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.
| Name: |
us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- DefinitionThe increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.
| Name: |
us-gaap_IncreaseDecreaseInAccountsReceivable |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
duration |
|
| X |
- DefinitionThe increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.
| Name: |
us-gaap_IncreaseDecreaseInInventories |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
duration |
|
| X |
- References
+ Details
| Name: |
us-gaap_IncreaseDecreaseInOperatingCapitalAbstract |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:stringItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of increase (decrease) in operating assets classified as other.
| Name: |
us-gaap_IncreaseDecreaseInOtherOperatingAssets |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
| Name: |
us-gaap_NetCashProvidedByUsedInFinancingActivities |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- References
+ Details
| Name: |
us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:stringItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
| Name: |
us-gaap_NetCashProvidedByUsedInInvestingActivities |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- References
+ Details
| Name: |
us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:stringItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
| Name: |
us-gaap_NetCashProvidedByUsedInOperatingActivities |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- References
+ Details
| Name: |
us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:stringItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionThe portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
| Name: |
us-gaap_NetIncomeLoss |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of income (expense) included in net income that results in no cash inflow (outflow), classified as other.
| Name: |
us-gaap_OtherNoncashIncomeExpense |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.
| Name: |
us-gaap_PaymentsOfDividendsCommonStock |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of cash outflow to acquire investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
| Name: |
us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
duration |
|
| X |
- DefinitionThe cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.
| Name: |
us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
duration |
|
| X |
- DefinitionThe cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.
| Name: |
us-gaap_PaymentsToAcquireIntangibleAssets |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
duration |
|
| X |
- DefinitionThe cash outflow to acquire an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among myriad other features and characteristics.
| Name: |
us-gaap_PaymentsToAcquireNotesReceivable |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
duration |
|
| X |
- DefinitionThe cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.
| Name: |
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
duration |
|
| X |
- DefinitionThis element represents the cash inflow during the period from the sale of a component of the entity.
| Name: |
us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of cash inflow for proceeds from settlement of insurance claim, classified as investing activities. Excludes insurance settlement classified as operating activities.
| Name: |
us-gaap_ProceedsFromInsuranceSettlementInvestingActivities |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of cash inflow (outflow) from financing activities classified as other.
| Name: |
us-gaap_ProceedsFromPaymentsForOtherFinancingActivities |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- DefinitionThe cash inflow associated with the proceeds from sale of notes receivable, as well as principal collections from a borrowing supported by a written promise to pay an obligation (note receivable).
| Name: |
us-gaap_ProceedsFromSaleAndCollectionOfNotesReceivable |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of cash inflow from sale, maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
| Name: |
us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- DefinitionThe cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.
| Name: |
us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- DefinitionThe cash inflow from the issuance of an equity stock that has been previously reacquired by the entity.
| Name: |
us-gaap_ProceedsFromSaleOfTreasuryStock |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.
| Name: |
us-gaap_ProvisionForDoubtfulAccounts |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
|
