Shareholders' Equity, Reclassfication Out of Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified
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3 Months Ended |
12 Months Ended |
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Revenue: |
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Net realized gains (losses) on investments |
$ 764us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments |
$ 3,109us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments |
$ (596)us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments |
$ (515)us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments |
$ (778)us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments |
$ (306)us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments |
$ 11,686us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments |
$ 13,318us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments |
$ 2,762us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments |
$ 23,920us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments |
$ 88,754us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments |
Net impairment losses on investments |
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(840)us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities |
(2,033)us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities |
(3,031)us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities |
Income tax expense (benefit) |
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17,234us-gaap_IncomeTaxExpenseBenefit |
34,727us-gaap_IncomeTaxExpenseBenefit |
24,996us-gaap_IncomeTaxExpenseBenefit |
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |
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Revenue: |
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Net realized gains (losses) on investments |
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(5,372)us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments / us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis = us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |
(27,243)us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments / us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis = us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |
(89,780)us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments / us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis = us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |
Net impairment losses on investments |
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840us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities / us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis = us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |
2,033us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities / us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis = us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |
3,031us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities / us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis = us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |
Income tax expense (benefit) |
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$ 870us-gaap_IncomeTaxExpenseBenefit / us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis = us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |
$ 3,642us-gaap_IncomeTaxExpenseBenefit / us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis = us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |
$ 5,350us-gaap_IncomeTaxExpenseBenefit / us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis = us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |