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Consolidated Statements of Stockholders' Equity (USD $) In Thousands | Common stock [Member] | Additional paid-in capital [Member] | Retained earnings [Member] | Accumulated other comprehensive income (loss) [Member] | Treasury stock [Member] | Comprehensive income [Member] | Total
--- | --- | --- | --- | --- | --- | --- | ---
Beginning of year at Dec. 31, 2009 | $ 191,646 | $ 231,933 | $ 1,138,978 | $ (12,460) | $ (547,722) |  |
Dividend reinvestment plan (shares: 47,488 - 2011; 53,272 - 2010) | 107 | 733 |  |  |  |  |
Stock purchase and compensation plans (shares: 577,745 - 2011; 218,525 - 2010) | 437 | 6,675 |  |  |  |  |
Net income |  |  | 24,569 |  |  | 24,569 | 24,569
Dividends to stockholders ($0.26 per share - 2011 and 2010) |  |  | (14,160) |  |  |  |
Non-credit portion of other-than-temporary impairment losses recognized in other comprehensive income, net of deferred income tax |  |  |  | 3,830 |  |  | 3,830
Other net unrealized gains on investment securities, net of deferred income tax |  |  |  | 25,044 |  |  |
Total unrealized gains on investment securities |  |  |  | 28,874 |  | 28,874 | 28,874
Defined benefit pension plans, net of deferred income tax |  |  |  | 1,412 |  | 1,412 | 1,412
Comprehensive income |  |  |  |  |  | 54,855 | 54,855
Acquisition of treasury stock (shares: 136,904 - 2011; 97,816 - 2010) |  |  |  |  | (1,518) |  |
End of period at Jun. 30, 2010 | 192,190 | 239,341 | 1,149,387 | 17,826 | (549,240) |  | 1,049,504
Beginning of year at Dec. 31, 2010 | 192,725 | 244,613 | 1,176,155 | 7,024 | (549,408) |  | 1,071,109
Dividend reinvestment plan (shares: 47,488 - 2011; 53,272 - 2010) | 95 | 716 |  |  |  |  |
Stock purchase and compensation plans (shares: 577,745 - 2011; 218,525 - 2010) | 1,156 | 6,860 |  |  |  |  |
Net income |  |  | 23,874 |  |  | 23,874 | 23,874
Dividends to stockholders ($0.26 per share - 2011 and 2010) |  |  | (14,370) |  |  |  |
Non-credit portion of other-than-temporary impairment losses recognized in other comprehensive income, net of deferred income tax |  |  |  | 389 |  |  | 389
Other net unrealized gains on investment securities, net of deferred income tax |  |  |  | 12,246 |  |  |
Total unrealized gains on investment securities |  |  |  | 12,635 |  | 12,635 | 12,635
Defined benefit pension plans, net of deferred income tax |  |  |  | 1,485 |  | 1,485 | 1,485
Comprehensive income |  |  |  |  |  | 37,994 | 37,994
Acquisition of treasury stock (shares: 136,904 - 2011; 97,816 - 2010) |  |  |  |  | (2,526) |  |
End of period at Jun. 30, 2011 | $ 193,976 | $ 252,189 | $ 1,185,659 | $ 21,144 | $ (551,934) |  | $ 1,101,034

X
- Definition Non-credit portion of other-than-temporary impairment losses on fixed maturity securities recognized in other comprehensive income, net of deferred income tax. This item includes subsequent changes to these securities such as amortization on HTM securities or subsequent sales. This item does not include subsequent changes in appreciation or loss in value. + Details
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- Definition Change in net unrealized gains or losses on investment securities, after tax. This amount excludes non-credit other-than-temporary impairment charges recorded during the period. + Details
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- Definition This amount is equal to the sum of: (i) the non-credit portion of other-than-temporary impairment losses on fixed maturity securities recognized in other comprehensive income, net of tax, including subsequent changes to these securities such as amortization on HTM securities or subsequent sales; and (ii) the change in net unrealized gains or losses on investment securities, after tax, excluding non-credit other-than-temporary impairment charges during the period. + Details
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- Definition The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A5 -Appendix A Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 30 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 8, 9, 10, 11, 12, 13, 14 + Details
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- Definition Aggregate cash, stock, and paid-in-kind dividends declared for common shareholders during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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- Definition The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 + Details
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- Definition Net changes to accumulated comprehensive income during the period related to benefit plans, after tax. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph c Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 22, 26 + Details
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- Definition Total of all Stockholders' Equity (deficit) items, net of receivables from officers, directors owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A3 -Appendix A Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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- Definition Value of stock issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the holder of the stock to reinvest dividends paid to them by the entity on new issues of stock by the entity. + Details
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