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v2.4.1.9

Schedule II Condensed Financial Information of Registrant (Details 2) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Cash flows - operating activities |  |  |
Interest expense paid | $ (13,902)us-gaap_InterestPaid | $ (13,825)us-gaap_InterestPaid | $ (13,948)us-gaap_InterestPaid
Federal income taxes recovered (paid) | (29,195)us-gaap_IncomeTaxesPaidNet | (33,672)us-gaap_IncomeTaxesPaidNet | (14,444)us-gaap_IncomeTaxesPaidNet
Other, net, including settlement of payables to subsidiaries | (15,437)us-gaap_PaymentsForOtherOperatingActivities | (16,135)us-gaap_PaymentsForOtherOperatingActivities | (18,124)us-gaap_PaymentsForOtherOperatingActivities
Net cash provided by operating activities | 221,933 us-gaap_NetCashProvidedByUsedInOperatingActivities | 205,936 us-gaap_NetCashProvidedByUsedInOperatingActivities | 202,848 us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash flows - investing activities |  |  |
Net cash provided by (used in) investing activities | (565,515)us-gaap_NetCashProvidedByUsedInInvestingActivities | (598,326)us-gaap_NetCashProvidedByUsedInInvestingActivities | (354,798)us-gaap_NetCashProvidedByUsedInInvestingActivities
Cash flows - financing activities |  |  |
Dividends paid to shareholders | (39,237)us-gaap_PaymentsOfDividendsCommonStock | (32,550)us-gaap_PaymentsOfDividendsCommonStock | (22,541)us-gaap_PaymentsOfDividendsCommonStock
Exercise of stock options | 8,252 us-gaap_ProceedsFromStockOptionsExercised | 19,336 us-gaap_ProceedsFromStockOptionsExercised | 5,421 us-gaap_ProceedsFromStockOptionsExercised
Net cash used in financing activities | 337,068 us-gaap_NetCashProvidedByUsedInFinancingActivities | 395,398 us-gaap_NetCashProvidedByUsedInFinancingActivities | 159,679 us-gaap_NetCashProvidedByUsedInFinancingActivities
Net increase (decrease) in cash | (6,514)us-gaap_CashPeriodIncreaseDecrease | 3,008 us-gaap_CashPeriodIncreaseDecrease | 7,729 us-gaap_CashPeriodIncreaseDecrease
Cash at beginning of period | 18,189 us-gaap_Cash | 15,181 us-gaap_Cash | 7,452 us-gaap_Cash
Cash at end of period | 11,675 us-gaap_Cash | 18,189 us-gaap_Cash | 15,181 us-gaap_Cash
Parent Company [Member] |  |  |
Cash flows - operating activities |  |  |
Interest expense paid | (13,902)us-gaap_InterestPaid / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (13,825)us-gaap_InterestPaid / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (13,948)us-gaap_InterestPaid / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Federal income taxes recovered (paid) | 8,740 us-gaap_IncomeTaxesPaidNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 5,996 us-gaap_IncomeTaxesPaidNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (118)us-gaap_IncomeTaxesPaidNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash dividends received from subsidiaries | 46,000 us-gaap_CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 41,000 us-gaap_CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 50,000 us-gaap_CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other, net, including settlement of payables to subsidiaries | (188)us-gaap_PaymentsForOtherOperatingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (21,235)us-gaap_PaymentsForOtherOperatingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 7,703 us-gaap_PaymentsForOtherOperatingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net cash provided by operating activities | 40,650 us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 11,936 us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 43,637 us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash flows - investing activities |  |  |
Net (increase) decrease in investments | (4,647)us-gaap_PaymentsForProceedsFromInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 5,488 us-gaap_PaymentsForProceedsFromInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (10,762)us-gaap_PaymentsForProceedsFromInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net cash provided by (used in) investing activities | (4,647)us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 5,488 us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (10,762)us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash flows - financing activities |  |  |
Dividends paid to shareholders | (39,237)us-gaap_PaymentsOfDividendsCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (32,550)us-gaap_PaymentsOfDividendsCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (22,541)us-gaap_PaymentsOfDividendsCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Acquisition of treasury stock | (5,411)us-gaap_PaymentsForRepurchaseOfCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (3,889)us-gaap_PaymentsForRepurchaseOfCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (15,735)us-gaap_PaymentsForRepurchaseOfCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Exercise of stock options | 8,252 us-gaap_ProceedsFromStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 19,336 us-gaap_ProceedsFromStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 5,421 us-gaap_ProceedsFromStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net cash used in financing activities | (36,396)us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (17,103)us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (32,855)us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net increase (decrease) in cash | (393)us-gaap_CashPeriodIncreaseDecrease / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 321 us-gaap_CashPeriodIncreaseDecrease / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 20 us-gaap_CashPeriodIncreaseDecrease / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash at beginning of period | 470 us-gaap_Cash / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 149 us-gaap_Cash / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 129 us-gaap_Cash / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash at end of period | $ 77 us-gaap_Cash / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ 470 us-gaap_Cash / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ 149 us-gaap_Cash / dei_LegalEntityAxis = us-gaap_ParentCompanyMember

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of increase (decrease) in cash. Cash is the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Includes effect from exchange rate changes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450594&loc=d3e33268-110906 + Details
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 + Details
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- Definition Amount 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3574-108585 + Details
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- Definition Amount 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3574-108585 + Details
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- Definition Amount 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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