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Investments Debt And Equity Securities (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011 | Dec. 31, 2011 | Dec. 31, 2010
Investments Including Short Term And Cash And Cash Equivalents [Abstract] |  |  |  |  |  |
Fixed maturity securities | $ 797,857 |  | $ 797,857 |  | $ 741,753 |
Fixed maturity securities percent | 85.10% |  | 85.10% |  | 85.00% |
Equity securities | 44,091 |  | 44,091 |  | 46,137 |
Equity securities percent | 4.70% |  | 4.70% |  | 5.30% |
Mortgage loans | 1,521 |  | 1,521 |  | 1,557 |
Mortgage loans percent | 0.20% |  | 0.20% |  | 0.20% |
Policy loans | 42,784 |  | 42,784 |  | 39,090 |
Policy loans percent | 4.60% |  | 4.60% |  | 4.50% |
Real estate and other long-term investments | 8,708 |  | 8,708 |  | 8,644 |
Real estate and other long-term investments percent | 0.90% |  | 0.90% |  | 1.00% |
Short-term investments | 2,356 |  | 2,356 |  | 2,048 |
Short-term investments percent | 0.30% |  | 0.30% |  | 0.20% |
Cash and cash equivalents | 39,830 | 64,425 | 39,830 | 64,425 | 33,255 | 49,723
Cash and cash equivalents percent | 4.20% |  | 4.20% |  | 3.80% |
Total cash, cash equivalents and investments | 937,147 |  | 937,147 |  | 872,484 |
Total cash, cash equivalents and investments percent | 100.00% |  | 100.00% |  | 100.00% |
Unrealized Gain (Loss) on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 549,205 |  | 549,205 |  | 484,809 |
Available-for-sale Equity Securities, Amortized Cost Basis | 42,812 |  | 42,812 |  | 45,599 |
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Total | 549,205 |  | 549,205 |  | 484,809 |
Available-for-sale Debt Securities, Gross Unrealized Gains, Total | 46,867 |  | 46,867 |  | 32,401 |
Available-for-sale Debt Securities, Gross Unrealized Losses, Total | 1,452 |  | 1,452 |  | 2,957 |
Available-for-sale Debt Securities, Total | 594,620 |  | 594,620 |  | 514,253 |
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount | 203,237 |  | 203,237 |  | 227,500 |
Held-to-maturity Securities, Fair Value | 209,580 |  | 209,580 |  | 230,093 |
Held-to-maturity Securities, Unrecognized Holding Gain | 6,651 |  | 6,651 |  | 2,732 |
Held-to-maturity Securities, Unrecognized Holding Loss | 308 |  | 308 |  | 139 |
Held-to-maturity Securities, Debt Maturities, Fair Value | 209,580 |  | 209,580 |  | 230,093 |
Total Fixed Maturity Securities, Amortized Cost | 752,442 |  | 752,442 |  |  |
Total Fixed Maturity Securities, Fair Value Disclosure | 804,200 |  | 804,200 |  |  |
Unrealized Continuous Losses on Investments [Abstract] |  |  |  |  |  |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 66 |  | 66 |  | 54 |
Debt Securities In Continuous Loss Less Than 12 Months Fair Value | 112,675 |  | 112,675 |  | 51,788 |
Debt Securities Continuous Loss Position Less Than 12 Months Unrealized Losses | 1,062 |  | 1,062 |  | 1,138 |
Number of Debt Securities In Continuous Loss Less Than 12 Months | 97 |  | 97 |  | 50 |
Debt Securities In Continuous Loss Position 12 Months Or Longer, Fair Value | 10,878 |  | 10,878 |  | 25,569 |
Debt Securities In Continuous Loss Position 12 Months Or Longer, Unrealized Losses | 698 |  | 698 |  | 1,958 |
Number of Debt Securities In Continuous Loss Position 12 Months or Longer | 8 |  | 8 |  | 20 |
Debt Securities In Continuous Loss Position, Aggregate Fair Value | 123,553 |  | 123,553 |  | 77,357 |
Debt Securities In Continuous Loss Position, Aggregate Unrealized Losses | 1,760 |  | 1,760 |  | 3,096 |
Number of Debt Securities In Continuous Loss Position, Aggregate | 105 |  | 105 |  | 70 |
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract] |  |  |  |  |  |
Proceeds from Sale of Available-for-sale Securities, Fixed Maturities | 0 | 0 | 503 | 0 |  |
Proceeds from Sale of Available-for-sale Securities, Equity | 2,856 | 0 | 2,856 | 0 |  |
Schedule of Fixed Maturities [Abstract] |  |  |  |  |  |
Available-for-sale Securities, Debt Maturities, Due in One Year or Less, Amortized Cost Basis | 15,102 |  | 15,102 |  |  |
Available-for-sale Securities, Debt Maturities, Due in One Year or Less, Fair Value | 15,309 |  | 15,309 |  |  |
Available-for-sale Securities, Debt Maturities, Due After One Year Through Five Years, Amortized Cost Basis | 74,476 |  | 74,476 |  |  |
Available-for-sale Securities, Debt Maturities, Due After One Year Through Five Years, Fair Value | 79,431 |  | 79,431 |  |  |
Available-for-sale Securities, Debt Maturities, Due After Five Years Through Ten Years, Amortized Cost Basis | 111,759 |  | 111,759 |  |  |
Available-for-sale Securities, Debt Maturities, Due After Five Years Through Ten Years, Fair Value | 119,654 |  | 119,654 |  |  |
Available-for-sale Securities, Debt Maturities, Due After Ten Years, Amortized Cost Basis | 341,214 |  | 341,214 |  |  |
Available-for-sale Securities, Debt Maturities, Due After Ten Years, Fair Value | 373,007 |  | 373,007 |  |  |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis | 6,654 |  | 6,654 |  |  |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value | 7,219 |  | 7,219 |  |  |
Held-to-maturity Securities, Debt Maturities, Due in One Year or Less, Amortized Cost Basis | 10,013 |  | 10,013 |  |  |
Held-to-maturity Securities, Debt Maturities, Due in One Year or Less, Fair Value | 10,044 |  | 10,044 |  |  |
Held-to-maturity Securities, Debt Maturities, Due After One Year Through Five Years, Amortized Cost Basis | 35,564 |  | 35,564 |  |  |
Held-to-maturity Securities, Debt Maturities, Due After One Year Through Five Years, Fair Value | 35,841 |  | 35,841 |  |  |
Held-to-maturity Securities, Debt Maturities, Due After Five Years Through Ten Years, Amortized Cost Basis | 47,212 |  | 47,212 |  |  |
Held-to-maturity Securities, Debt Maturities, Due After Five Years Through Ten Years, Fair Value | 50,192 |  | 50,192 |  |  |
Held-to-maturity Securities, Debt Maturities, Due After Ten Years, Amortized Cost Basis | 110,448 |  | 110,448 |  |  |
Held-to-maturity Securities, Debt Maturities, Due After Ten Years, Fair Value | 113,503 |  | 113,503 |  |  |
US Treasury Securities [Member] |  |  |  |  |  |
Unrealized Gain (Loss) on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 10,184 |  | 10,184 |  | 10,228 |
Available-for-sale Securities, Gross Unrealized Gains | 3,931 |  | 3,931 |  | 3,730 |
Available-for-sale Securities, Gross Unrealized Losses | 0 |  | 0 |  | 0 |
Available-for-sale Securities, Fair Value | 14,115 |  | 14,115 |  | 13,958 |
US Government Agencies Debt Securities [Member] |  |  |  |  |  |
Unrealized Gain (Loss) on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 89,397 |  | 89,397 |  | 143,684 |
Available-for-sale Securities, Gross Unrealized Gains | 4,255 |  | 4,255 |  | 3,198 |
Available-for-sale Securities, Gross Unrealized Losses | 32 |  | 32 |  | 65 |
Available-for-sale Securities, Fair Value | 93,620 |  | 93,620 |  | 146,817 |
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount | 51,136 |  | 51,136 |  | 160,411 |
Held-to-maturity Securities, Unrecognized Holding Gain | 622 |  | 622 |  | 742 |
Held-to-maturity Securities, Unrecognized Holding Loss | 4 |  | 4 |  | 12 |
Held-to-maturity Securities, Debt Maturities, Fair Value | 51,754 |  | 51,754 |  | 161,141 |
Unrealized Continuous Losses on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 9,993 |  | 9,993 |  | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 32 |  | 32 |  | 0 |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 8 |  | 8 |  | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 |  | 0 |  | 3,718 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | 0 |  | 0 |  | 65 |
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater | 0 |  | 0 |  | 2 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 9,993 |  | 9,993 |  | 3,718 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | 32 |  | 32 |  | 65 |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 8 |  | 8 |  | 2 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 1,751 |  | 1,751 |  | 6,997 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 2 |  | 2 |  | 2 |
Number of Held-to-maturity Securities In Continuous Loss Position Less Than 12 Months | 3 |  | 3 |  | 4 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 1,105 |  | 1,105 |  | 1,121 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | 2 |  | 2 |  | 10 |
Number of Held-to-maturity Securities In Continuous Loss Position 12 Months or Greater | 1 |  | 1 |  | 1 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value | 2,856 |  | 2,856 |  | 8,118 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses | 4 |  | 4 |  | 12 |
Number of Held-to-maturity Securities In Continuous Loss Position Aggregate | 4 |  | 4 |  | 5 |
US States and Political Subdivisions Debt Securities [Member] |  |  |  |  |  |
Unrealized Gain (Loss) on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 233,712 |  | 233,712 |  | 151,058 |
Available-for-sale Securities, Gross Unrealized Gains | 16,678 |  | 16,678 |  | 10,275 |
Available-for-sale Securities, Gross Unrealized Losses | 748 |  | 748 |  | 1,391 |
Available-for-sale Securities, Fair Value | 249,642 |  | 249,642 |  | 159,942 |
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount | 119,206 |  | 119,206 |  | 56,260 |
Held-to-maturity Securities, Unrecognized Holding Gain | 4,975 |  | 4,975 |  | 1,941 |
Held-to-maturity Securities, Unrecognized Holding Loss | 287 |  | 287 |  | 84 |
Held-to-maturity Securities, Debt Maturities, Fair Value | 123,894 |  | 123,894 |  | 58,117 |
Unrealized Continuous Losses on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 44,391 |  | 44,391 |  | 1,965 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 408 |  | 408 |  | 29 |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 40 |  | 40 |  | 4 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 5,095 |  | 5,095 |  | 11,777 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | 340 |  | 340 |  | 1,362 |
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater | 2 |  | 2 |  | 9 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 49,486 |  | 49,486 |  | 13,742 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | 748 |  | 748 |  | 1,391 |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 42 |  | 42 |  | 13 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 37,322 |  | 37,322 |  | 8,345 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 287 |  | 287 |  | 84 |
Number of Held-to-maturity Securities In Continuous Loss Position Less Than 12 Months | 32 |  | 32 |  | 7 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 |  | 0 |  | 0 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | 0 |  | 0 |  | 0 |
Number of Held-to-maturity Securities In Continuous Loss Position 12 Months or Greater | 0 |  | 0 |  | 0 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value | 37,322 |  | 37,322 |  | 8,345 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses | 287 |  | 287 |  | 84 |
Number of Held-to-maturity Securities In Continuous Loss Position Aggregate | 32 |  | 32 |  | 7 |
Foreign Government Debt Securities [Member] |  |  |  |  |  |
Unrealized Gain (Loss) on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 105 |  | 105 |  | 105 |
Available-for-sale Securities, Gross Unrealized Gains | 38 |  | 38 |  | 37 |
Available-for-sale Securities, Gross Unrealized Losses | 0 |  | 0 |  | 0 |
Available-for-sale Securities, Fair Value | 143 |  | 143 |  | 142 |
Corporate Debt Securities [Member] |  |  |  |  |  |
Unrealized Gain (Loss) on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 209,153 |  | 209,153 |  | 171,462 |
Available-for-sale Securities, Gross Unrealized Gains | 21,397 |  | 21,397 |  | 14,576 |
Available-for-sale Securities, Gross Unrealized Losses | 669 |  | 669 |  | 1,493 |
Available-for-sale Securities, Fair Value | 229,881 |  | 229,881 |  | 184,545 |
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount | 32,895 |  | 32,895 |  | 10,829 |
Held-to-maturity Securities, Unrecognized Holding Gain | 1,054 |  | 1,054 |  | 49 |
Held-to-maturity Securities, Unrecognized Holding Loss | 17 |  | 17 |  | 43 |
Held-to-maturity Securities, Debt Maturities, Fair Value | 33,932 |  | 33,932 |  | 10,835 |
Unrealized Continuous Losses on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 14,820 |  | 14,820 |  | 27,239 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 315 |  | 315 |  | 976 |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 10 |  | 10 |  | 30 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 4,623 |  | 4,623 |  | 8,886 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | 354 |  | 354 |  | 517 |
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater | 4 |  | 4 |  | 6 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 19,443 |  | 19,443 |  | 36,125 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | 669 |  | 669 |  | 1,493 |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 14 |  | 14 |  | 36 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 4,255 |  | 4,255 |  | 6,706 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 17 |  | 17 |  | 43 |
Number of Held-to-maturity Securities In Continuous Loss Position Less Than 12 Months | 3 |  | 3 |  | 4 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 |  | 0 |  | 0 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | 0 |  | 0 |  | 0 |
Number of Held-to-maturity Securities In Continuous Loss Position 12 Months or Greater | 0 |  | 0 |  | 0 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value | 4,255 |  | 4,255 |  | 6,706 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses | 17 |  | 17 |  | 43 |
Number of Held-to-maturity Securities In Continuous Loss Position Aggregate | 3 |  | 3 |  | 4 |
Collateralized Mortgage Backed Securities [Member] |  |  |  |  |  |
Schedule of Fixed Maturities [Abstract] |  |  |  |  |  |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis | 6,700 |  | 6,700 |  |  |
Commercial Mortgage Backed Securities [Member] |  |  |  |  |  |
Unrealized Gain (Loss) on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 547 |  | 547 |  | 736 |
Available-for-sale Securities, Gross Unrealized Gains | 19 |  | 19 |  | 23 |
Available-for-sale Securities, Gross Unrealized Losses | 1 |  | 1 |  | 0 |
Available-for-sale Securities, Fair Value | 565 |  | 565 |  | 759 |
Unrealized Continuous Losses on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 143 |  | 143 |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 1 |  | 1 |  |  |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 1 |  | 1 |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 |  | 0 |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | 0 |  | 0 |  |  |
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater | 0 |  | 0 |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 143 |  | 143 |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | 1 |  | 1 |  |  |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 1 |  | 1 |  |  |
Residential Mortgage Backed Securities [Member] |  |  |  |  |  |
Unrealized Gain (Loss) on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 6,107 |  | 6,107 |  | 7,536 |
Available-for-sale Securities, Gross Unrealized Gains | 549 |  | 549 |  | 562 |
Available-for-sale Securities, Gross Unrealized Losses | 2 |  | 2 |  | 8 |
Available-for-sale Securities, Fair Value | 6,654 |  | 6,654 |  | 8,090 |
Unrealized Continuous Losses on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 0 |  | 0 |  | 536 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 0 |  | 0 |  | 4 |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 0 |  | 0 |  | 1 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 55 |  | 55 |  | 67 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | 2 |  | 2 |  | 4 |
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater | 1 |  | 1 |  | 2 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 55 |  | 55 |  | 603 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | 2 |  | 2 |  | 8 |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 1 |  | 1 |  | 3 |
Debt Securities [Member] |  |  |  |  |  |
Unrealized Gain (Loss) on Investments [Abstract] |  |  |  |  |  |
Total Fixed Maturity Securities, Amortized Cost | 752,442 |  | 752,442 |  | 712,309 |
Total Fixed Maturity Securities, Gross Unrealized Gains | 53,518 |  | 53,518 |  | 35,133 |
Total Fixed Maturity Securities, Gross Unrealized Losses | 1,760 |  | 1,760 |  | 3,096 |
Total Fixed Maturity Securities, Fair Value Disclosure | 804,200 |  | 804,200 |  | 744,346 |
Unrealized Continuous Losses on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 69,347 |  | 69,347 |  | 29,740 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 756 |  | 756 |  | 1,009 |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 59 |  | 59 |  | 35 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 9,773 |  | 9,773 |  | 24,448 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | 696 |  | 696 |  | 1,948 |
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater | 7 |  | 7 |  | 19 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 79,120 |  | 79,120 |  | 54,188 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | 1,452 |  | 1,452 |  | 2,957 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 43,328 |  | 43,328 |  | 22,048 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 306 |  | 306 |  | 129 |
Number of Held-to-maturity Securities In Continuous Loss Position Less Than 12 Months | 38 |  | 38 |  | 15 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 1,105 |  | 1,105 |  | 1,121 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | 2 |  | 2 |  | 10 |
Number of Held-to-maturity Securities In Continuous Loss Position 12 Months or Greater | 1 |  | 1 |  | 1 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value | 44,433 |  | 44,433 |  | 23,169 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses | 308 |  | 308 |  | 139 |
Number of Held-to-maturity Securities In Continuous Loss Position Aggregate | 39 |  | 39 |  | 16 |
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract] |  |  |  |  |  |
Available-for-sale Securities, Gross Realized Gains | 0 | 0 | 4 | 0 |  |
Available-for-sale Securities, Gross Realized Losses | 0 | 0 | 3 | 0 |  |
Stock Mutual Funds [Member] |  |  |  |  |  |
Unrealized Gain (Loss) on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Equity Securities, Amortized Cost Basis | 10,463 |  | 10,463 |  | 12,686 |
Available-for-sale Securities, Gross Unrealized Gains | 263 |  | 263 |  | 415 |
Available-for-sale Securities, Gross Unrealized Losses | 24 |  | 24 |  | 376 |
Available-for-sale Securities, Fair Value | 10,702 |  | 10,702 |  | 12,725 |
Unrealized Continuous Losses on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 0 |  | 0 |  | 7,158 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 0 |  | 0 |  | 376 |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 0 |  | 0 |  | 2 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 976 |  | 976 |  | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | 24 |  | 24 |  | 0 |
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater | 1 |  | 1 |  | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 976 |  | 976 |  | 7,158 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | 24 |  | 24 |  | 376 |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 1 |  | 1 |  | 2 |
Bond Mutual Funds [Member] |  |  |  |  |  |
Unrealized Gain (Loss) on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Equity Securities, Amortized Cost Basis | 31,503 |  | 31,503 |  | 31,504 |
Available-for-sale Securities, Gross Unrealized Gains | 649 |  | 649 |  | 27 |
Available-for-sale Securities, Gross Unrealized Losses | 19 |  | 19 |  | 117 |
Available-for-sale Securities, Fair Value | 32,133 |  | 32,133 |  | 31,414 |
Unrealized Continuous Losses on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 0 |  | 0 |  | 25,387 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 0 |  | 0 |  | 117 |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 0 |  | 0 |  | 10 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 2,981 |  | 2,981 |  | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | 19 |  | 19 |  | 0 |
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater | 2 |  | 2 |  | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 2,981 |  | 2,981 |  | 25,387 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | 19 |  | 19 |  | 117 |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 2 |  | 2 |  | 10 |
Common Stock [Member] |  |  |  |  |  |
Unrealized Gain (Loss) on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Equity Securities, Amortized Cost Basis | 17 |  | 17 |  | 17 |
Available-for-sale Securities, Gross Unrealized Gains | 0 |  | 0 |  | 7 |
Available-for-sale Securities, Gross Unrealized Losses | 3 |  | 3 |  | 0 |
Available-for-sale Securities, Fair Value | 14 |  | 14 |  | 24 |
Unrealized Continuous Losses on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 14 |  | 14 |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 3 |  | 3 |  |  |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 1 |  | 1 |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 |  | 0 |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | 0 |  | 0 |  |  |
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater | 0 |  | 0 |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 14 |  | 14 |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | 3 |  | 3 |  |  |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 1 |  | 1 |  |  |
Preferred Stock [Member] |  |  |  |  |  |
Unrealized Gain (Loss) on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Equity Securities, Amortized Cost Basis | 829 |  | 829 |  | 1,392 |
Available-for-sale Securities, Gross Unrealized Gains | 413 |  | 413 |  | 582 |
Available-for-sale Securities, Gross Unrealized Losses | 0 |  | 0 |  | 0 |
Available-for-sale Securities, Fair Value | 1,242 |  | 1,242 |  | 1,974 |
Equity Securities [Member] |  |  |  |  |  |
Unrealized Gain (Loss) on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Equity Securities, Amortized Cost Basis | 42,812 |  | 42,812 |  | 45,599 |
Available-for-sale Securities, Gross Unrealized Gains | 1,325 |  | 1,325 |  | 1,031 |
Available-for-sale Securities, Gross Unrealized Losses | 46 |  | 46 |  | 493 |
Available-for-sale Securities, Fair Value | 44,091 |  | 44,091 |  | 46,137 |
Unrealized Continuous Losses on Investments [Abstract] |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 14 |  | 14 |  | 32,545 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 3 |  | 3 |  | 493 |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 1 |  | 1 |  | 12 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 3,957 |  | 3,957 |  | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | 43 |  | 43 |  | 0 |
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater | 3 |  | 3 |  | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 3,971 |  | 3,971 |  | 32,545 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | 46 |  | 46 |  | 493 |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 4 |  | 4 |  | 12 |
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract] |  |  |  |  |  |
Available-for-sale Securities, Gross Realized Gains | 632 | 0 | 632 | 0 |  |
Available-for-sale Securities, Gross Realized Losses | $ 0 | $ 0 | $ 0 | $ 0 |  |
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |  |  |  |  |
Schedule of Fixed Maturities [Abstract] |  |  |  |  |  |
Percent of residential mortgage backed to securities | 91.00% |  | 91.00% |  |  |

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