Investments (Details) (USD $) | 3 Months Ended | 6 Months Ended | 12 Months Ended | |
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013 | Dec. 31, 2012 |
Investments Including Short Term And Cash And Cash Equivalents [Abstract] | ' | ' | ' | ' | ' | ' |
Fixed maturity securities | $892,449,000 | ' | $892,449,000 | ' | $832,952,000 | ' |
Fixed maturity securities percent | 83.60% | ' | 83.60% | ' | 83.90% | ' |
Equity securities | 56,637,000 | ' | 56,637,000 | ' | 47,259,000 | ' |
Equity securities percent | 5.30% | ' | 5.30% | ' | 4.80% | ' |
Mortgage loans | 650,000 | ' | 650,000 | ' | 671,000 | ' |
Mortgage loans percent | 0.10% | ' | 0.10% | ' | 0.10% | ' |
Policy loans | 52,001,000 | ' | 52,001,000 | ' | 48,868,000 | ' |
Policy loans percent | 4.90% | ' | 4.90% | ' | 4.80% | ' |
Real estate and other long-term investments | 8,262,000 | ' | 8,262,000 | ' | 8,485,000 | ' |
Real estate and other long-term investments percent | 0.80% | ' | 0.80% | ' | 0.90% | ' |
Cash and cash equivalents | 57,437,000 | 41,013,000 | 57,437,000 | 41,013,000 | 54,593,000 | 56,299,000 |
Cash and cash equivalents percent | 5.30% | ' | 5.30% | ' | 5.50% | ' |
Total cash, cash equivalents and investments | 1,067,436,000 | ' | 1,067,436,000 | ' | 992,828,000 | ' |
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 | 628,591,000 | ' | 628,591,000 | ' | 595,944,000 | ' |
Available-for-sale Equity Securities, Amortized Cost Basis | 54,075,000 | ' | 54,075,000 | ' | 45,883,000 | ' |
Available-for-sale Securities, Fair Value | 720,138,000 | ' | 720,138,000 | ' | 652,515,000 | ' |
Available-for-sale Securities, Debt Securities, Amortized Cost Basis, Total | 628,591,000 | ' | 628,591,000 | ' | 595,944,000 | ' |
Available-for-sale Debt Securities, Gross Unrealized Gains, Total | ' | ' | 37,521,000 | ' | 22,390,000 | ' |
Available-for-sale Debt Securities, Gross Unrealized Losses, Total | ' | ' | 2,611,000 | ' | 13,078,000 | ' |
Available-for-sale Debt Securities, Fair Value | 663,501,000 | ' | 663,501,000 | ' | 605,256,000 | ' |
Held-to-maturity Securities, Debt Securities, Net Carrying Amount | 228,948,000 | ' | 228,948,000 | ' | 227,696,000 | ' |
Held-to-maturity Securities, Unrecognized Holding Gain | ' | ' | 7,172,000 | ' | 2,601,000 | ' |
Held-to-maturity Securities, Unrecognized Holding Loss | ' | ' | 1,705,000 | ' | 6,764,000 | ' |
Held-to-maturity Securities, Fair Value | 234,415,000 | ' | 234,415,000 | ' | 223,533,000 | ' |
Total Fixed Maturity Securities, Amortized Cost | 857,539,000 | ' | 857,539,000 | ' | ' | ' |
Total Fixed Maturity Securities, Fair Value | 897,916,000 | ' | 897,916,000 | ' | ' | ' |
Unrealized Continuous Losses on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 108 | ' | 108 | ' | 262 | ' |
Debt Securities In Continuous Loss Less Than 12 Months Fair Value | 27,241,000 | ' | 27,241,000 | ' | 341,533,000 | ' |
Debt Securities Continuous Loss Position Less Than 12 Months Unrealized Losses | ' | ' | 352,000 | ' | 16,737,000 | ' |
Number of Debt Securities In Continuous Loss Less Than 12 Months | 41 | ' | 41 | ' | 366 | ' |
Debt Securities In Continuous Loss Position 12 Months Or Longer, Fair Value | 146,175,000 | ' | 146,175,000 | ' | 32,938,000 | ' |
Debt Securities In Continuous Loss Position 12 Months Or Longer, Unrealized Losses | ' | ' | 3,964,000 | ' | 3,105,000 | ' |
Number of Debt Securities In Continuous Loss Position 12 Months or Longer | 139 | ' | 139 | ' | 36 | ' |
Debt Securities In Continuous Loss Position, Aggregate Fair Value | 173,416,000 | ' | 173,416,000 | ' | 374,471,000 | ' |
Debt Securities In Continuous Loss Position, Aggregate Unrealized Losses | ' | ' | 4,316,000 | ' | 19,842,000 | ' |
Number of Debt Securities In Continuous Loss Position, Aggregate | 180 | ' | 180 | ' | 402 | ' |
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract] | ' | ' | ' | ' | ' | ' |
Proceeds from Sale of Available-for-sale Securities, Fixed Maturities | 580,000 | 0 | 580,000 | 58,000 | ' | ' |
Proceeds from Sale of Available-for-sale Securities, Equity | 11,105,000 | 0 | 11,105,000 | 0 | ' | ' |
Schedule of Fixed Maturities [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Debt Maturities, Due in One Year or Less, Amortized Cost Basis | 23,996,000 | ' | 23,996,000 | ' | ' | ' |
Available-for-sale Securities, Debt Maturities, Due in One Year or Less, Fair Value | 24,352,000 | ' | 24,352,000 | ' | ' | ' |
Available-for-sale Securities, Debt Maturities, Due After One Year Through Five Years, Amortized Cost Basis | 113,391,000 | ' | 113,391,000 | ' | ' | ' |
Available-for-sale Securities, Debt Maturities, Due After One Year Through Five Years, Fair Value | 121,225,000 | ' | 121,225,000 | ' | ' | ' |
Available-for-sale Securities, Debt Maturities, Due After Five Years Through Ten Years, Amortized Cost Basis | 100,341,000 | ' | 100,341,000 | ' | ' | ' |
Available-for-sale Securities, Debt Maturities, Due After Five Years Through Ten Years, Fair Value | 106,079,000 | ' | 106,079,000 | ' | ' | ' |
Available-for-sale Securities, Debt Maturities, Due After Ten Years, Amortized Cost Basis | 390,863,000 | ' | 390,863,000 | ' | ' | ' |
Available-for-sale Securities, Debt Maturities, Due After Ten Years, Fair Value | 411,845,000 | ' | 411,845,000 | ' | ' | ' |
Held-to-maturity Securities, Debt Maturities, Due in One Year or Less, Amortized Cost Basis | 13,446,000 | ' | 13,446,000 | ' | ' | ' |
Held-to-maturity Securities, Debt Maturities, Due in One Year or Less, Fair Value | 13,520,000 | ' | 13,520,000 | ' | ' | ' |
Held-to-maturity Securities, Debt Maturities, Due After One Year Through Five Years, Amortized Cost Basis | 28,682,000 | ' | 28,682,000 | ' | ' | ' |
Held-to-maturity Securities, Debt Maturities, Due After One Year Through Five Years, Fair Value | 29,438,000 | ' | 29,438,000 | ' | ' | ' |
Held-to-maturity Securities, Debt Maturities, Due After Five Years Through Ten Years, Amortized Cost Basis | 47,381,000 | ' | 47,381,000 | ' | ' | ' |
Held-to-maturity Securities, Debt Maturities, Due After Five Years Through Ten Years, Fair Value | 49,863,000 | ' | 49,863,000 | ' | ' | ' |
Held-to-maturity Securities, Debt Maturities, Due After Ten Years, Amortized Cost Basis | 139,439,000 | ' | 139,439,000 | ' | ' | ' |
Held-to-maturity Securities, Debt Maturities, Due After Ten Years, Fair Value | 141,594,000 | ' | 141,594,000 | ' | ' | ' |
Sale of bonds, number of securities sold at a loss | 1 | ' | ' | 0 | ' | ' |
Sale of bonds, number of held-to-maturity bonds sold | 0 | ' | ' | 0 | ' | ' |
US Treasury Securities [Member] | ' | ' | ' | ' | ' | ' |
Unrealized Gain (Loss) on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Debt Securities, Amortized Cost Basis | 10,086,000 | ' | 10,086,000 | ' | 10,115,000 | ' |
Available-for-sale Securities, Gross Unrealized Gains | ' | ' | 2,712,000 | ' | 2,348,000 | ' |
Available-for-sale Securities, Gross Unrealized Losses | ' | ' | 0 | ' | 0 | ' |
Available-for-sale Securities, Fair Value | 12,798,000 | ' | 12,798,000 | ' | 12,463,000 | ' |
US Government Agencies Debt Securities [Member] | ' | ' | ' | ' | ' | ' |
Unrealized Gain (Loss) on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Debt Securities, Amortized Cost Basis | 38,765,000 | ' | 38,765,000 | ' | 53,587,000 | ' |
Available-for-sale Securities, Gross Unrealized Gains | ' | ' | 1,919,000 | ' | 1,209,000 | ' |
Available-for-sale Securities, Gross Unrealized Losses | ' | ' | 1,000 | ' | 228,000 | ' |
Available-for-sale Securities, Fair Value | 40,683,000 | ' | 40,683,000 | ' | 54,568,000 | ' |
Held-to-maturity Securities, Debt Securities, Net Carrying Amount | 5,815,000 | ' | 5,815,000 | ' | 8,877,000 | ' |
Held-to-maturity Securities, Unrecognized Holding Gain | ' | ' | 246,000 | ' | 197,000 | ' |
Held-to-maturity Securities, Unrecognized Holding Loss | ' | ' | 0 | ' | 3,000 | ' |
Held-to-maturity Securities, Fair Value | 6,061,000 | ' | 6,061,000 | ' | 9,071,000 | ' |
Unrealized Continuous Losses on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 160,000 | ' | 160,000 | ' | 14,032,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | ' | ' | 1,000 | ' | 228,000 | ' |
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 | 0 | ' | 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 | ' | 0 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 160,000 | ' | 160,000 | ' | 14,032,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | ' | ' | 1,000 | ' | 228,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 1 | ' | 1 | ' | 12 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | ' | ' | ' | ' | 2,997,000 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | ' | ' | ' | ' | 3,000 | ' |
Number of Held-to-maturity Securities In Continuous Loss Position Less Than 12 Months | ' | ' | ' | ' | 1 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | ' | ' | ' | ' | 0 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | ' | ' | ' | ' | 0 | ' |
Number of Held-to-maturity Securities In Continuous Loss Position 12 Months or Greater | ' | ' | ' | ' | 0 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value | ' | ' | ' | ' | 2,997,000 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses | ' | ' | ' | ' | 3,000 | ' |
Number of Held-to-maturity Securities In Continuous Loss Position Aggregate | ' | ' | ' | ' | 1 | ' |
US States and Political Subdivisions Debt Securities [Member] | ' | ' | ' | ' | ' | ' |
Unrealized Gain (Loss) on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Debt Securities, Amortized Cost Basis | 363,443,000 | ' | 363,443,000 | ' | 341,673,000 | ' |
Available-for-sale Securities, Gross Unrealized Gains | ' | ' | 14,413,000 | ' | 6,242,000 | ' |
Available-for-sale Securities, Gross Unrealized Losses | ' | ' | 2,490,000 | ' | 11,449,000 | ' |
Available-for-sale Securities, Fair Value | 375,366,000 | ' | 375,366,000 | ' | 336,466,000 | ' |
Held-to-maturity Securities, Debt Securities, Net Carrying Amount | 186,512,000 | ' | 186,512,000 | ' | 181,246,000 | ' |
Held-to-maturity Securities, Unrecognized Holding Gain | ' | ' | 5,895,000 | ' | 1,633,000 | ' |
Held-to-maturity Securities, Unrecognized Holding Loss | ' | ' | 1,626,000 | ' | 6,412,000 | ' |
Held-to-maturity Securities, Fair Value | 190,781,000 | ' | 190,781,000 | ' | 176,467,000 | ' |
Unrealized Continuous Losses on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 9,760,000 | ' | 9,760,000 | ' | 183,280,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | ' | ' | 124,000 | ' | 9,872,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 14 | ' | 14 | ' | 203 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 81,215,000 | ' | 81,215,000 | ' | 15,673,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | ' | ' | 2,366,000 | ' | 1,577,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater | 72 | ' | 72 | ' | 16 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 90,975,000 | ' | 90,975,000 | ' | 198,953,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | ' | ' | 2,490,000 | ' | 11,449,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 86 | ' | 86 | ' | 219 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 3,975,000 | ' | 3,975,000 | ' | 100,153,000 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | ' | ' | 95,000 | ' | 5,236,000 | ' |
Number of Held-to-maturity Securities In Continuous Loss Position Less Than 12 Months | 8 | ' | 8 | ' | 118 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 55,841,000 | ' | 55,841,000 | ' | 14,797,000 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | ' | ' | 1,531,000 | ' | 1,176,000 | ' |
Number of Held-to-maturity Securities In Continuous Loss Position 12 Months or Greater | 60 | ' | 60 | ' | 17 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value | 59,816,000 | ' | 59,816,000 | ' | 114,950,000 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses | ' | ' | 1,626,000 | ' | 6,412,000 | ' |
Number of Held-to-maturity Securities In Continuous Loss Position Aggregate | 68 | ' | 68 | ' | 135 | ' |
Foreign Government Debt Securities [Member] | ' | ' | ' | ' | ' | ' |
Unrealized Gain (Loss) on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Debt Securities, Amortized Cost Basis | 104,000 | ' | 104,000 | ' | 104,000 | ' |
Available-for-sale Securities, Gross Unrealized Gains | ' | ' | 29,000 | ' | 23,000 | ' |
Available-for-sale Securities, Gross Unrealized Losses | ' | ' | 0 | ' | 0 | ' |
Available-for-sale Securities, Fair Value | 133,000 | ' | 133,000 | ' | 127,000 | ' |
Corporate Debt Securities [Member] | ' | ' | ' | ' | ' | ' |
Unrealized Gain (Loss) on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Debt Securities, Amortized Cost Basis | 212,432,000 | ' | 212,432,000 | ' | 186,671,000 | ' |
Available-for-sale Securities, Gross Unrealized Gains | ' | ' | 18,168,000 | ' | 12,289,000 | ' |
Available-for-sale Securities, Gross Unrealized Losses | ' | ' | 116,000 | ' | 1,399,000 | ' |
Available-for-sale Securities, Fair Value | 230,484,000 | ' | 230,484,000 | ' | 197,561,000 | ' |
Held-to-maturity Securities, Debt Securities, Net Carrying Amount | 36,621,000 | ' | 36,621,000 | ' | 37,573,000 | ' |
Held-to-maturity Securities, Unrecognized Holding Gain | ' | ' | 1,031,000 | ' | 771,000 | ' |
Held-to-maturity Securities, Unrecognized Holding Loss | ' | ' | 79,000 | ' | 349,000 | ' |
Held-to-maturity Securities, Fair Value | 37,573,000 | ' | 37,573,000 | ' | 37,995,000 | ' |
Unrealized Continuous Losses on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 10,634,000 | ' | 10,634,000 | ' | 35,789,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | ' | ' | 73,000 | ' | 1,048,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 8 | ' | 8 | ' | 25 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 6,081,000 | ' | 6,081,000 | ' | 2,426,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | ' | ' | 43,000 | ' | 351,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater | 4 | ' | 4 | ' | 2 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 16,715,000 | ' | 16,715,000 | ' | 38,215,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | ' | ' | 116,000 | ' | 1,399,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 12 | ' | 12 | ' | 27 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 2,490,000 | ' | 2,490,000 | ' | 5,225,000 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | ' | ' | 57,000 | ' | 349,000 | ' |
Number of Held-to-maturity Securities In Continuous Loss Position Less Than 12 Months | 2 | ' | 2 | ' | 4 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 3,001,000 | ' | 3,001,000 | ' | 0 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | ' | ' | 22,000 | ' | 0 | ' |
Number of Held-to-maturity Securities In Continuous Loss Position 12 Months or Greater | 2 | ' | 2 | ' | 0 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value | 5,491,000 | ' | 5,491,000 | ' | 5,225,000 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses | ' | ' | 79,000 | ' | 349,000 | ' |
Number of Held-to-maturity Securities In Continuous Loss Position Aggregate | 4 | ' | 4 | ' | 4 | ' |
Collateralized Mortgage Backed Securities [Member] | ' | ' | ' | ' | ' | ' |
Schedule of Fixed Maturities And Equity Securities [Line Items] | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis | 3,800,000 | ' | 3,800,000 | ' | ' | ' |
Commercial Mortgage Backed Securities [Member] | ' | ' | ' | ' | ' | ' |
Unrealized Gain (Loss) on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Debt Securities, Amortized Cost Basis | 262,000 | ' | 262,000 | ' | 300,000 | ' |
Available-for-sale Securities, Gross Unrealized Gains | ' | ' | 9,000 | ' | 9,000 | ' |
Available-for-sale Securities, Gross Unrealized Losses | ' | ' | 0 | ' | 0 | ' |
Available-for-sale Securities, Fair Value | 271,000 | ' | 271,000 | ' | 309,000 | ' |
Residential Mortgage Backed Securities [Member] | ' | ' | ' | ' | ' | ' |
Unrealized Gain (Loss) on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Debt Securities, Amortized Cost Basis | 3,499,000 | ' | 3,499,000 | ' | 3,494,000 | ' |
Available-for-sale Securities, Gross Unrealized Gains | ' | ' | 271,000 | ' | 270,000 | ' |
Available-for-sale Securities, Gross Unrealized Losses | ' | ' | 4,000 | ' | 2,000 | ' |
Available-for-sale Securities, Fair Value | 3,766,000 | ' | 3,766,000 | ' | 3,762,000 | ' |
Unrealized Continuous Losses on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 222,000 | ' | 222,000 | ' | 57,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | ' | ' | 2,000 | ' | 1,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 8 | ' | 8 | ' | 3 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 37,000 | ' | 37,000 | ' | 42,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | ' | ' | 2,000 | ' | 1,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater | 1 | ' | 1 | ' | 1 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 259,000 | ' | 259,000 | ' | 99,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | ' | ' | 4,000 | ' | 2,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 9 | ' | 9 | ' | 4 | ' |
Debt Securities [Member] | ' | ' | ' | ' | ' | ' |
Unrealized Gain (Loss) on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Total Fixed Maturity Securities, Amortized Cost | 857,539,000 | ' | 857,539,000 | ' | 823,640,000 | ' |
Total Fixed Maturity Securities, Gross Unrealized Gains | ' | ' | 44,693,000 | ' | 24,991,000 | ' |
Total Fixed Maturity Securities, Gross Unrealized Losses | ' | ' | 4,316,000 | ' | 19,842,000 | ' |
Total Fixed Maturity Securities, Fair Value | 897,916,000 | ' | 897,916,000 | ' | 828,789,000 | ' |
Unrealized Continuous Losses on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 20,776,000 | ' | 20,776,000 | ' | 233,158,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | ' | ' | 200,000 | ' | 11,149,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 31 | ' | 31 | ' | 243 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 87,333,000 | ' | 87,333,000 | ' | 18,141,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | ' | ' | 2,411,000 | ' | 1,929,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater | 77 | ' | 77 | ' | 19 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 108,109,000 | ' | 108,109,000 | ' | 251,299,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | ' | ' | 2,611,000 | ' | 13,078,000 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 6,465,000 | ' | 6,465,000 | ' | 108,375,000 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | ' | ' | 152,000 | ' | 5,588,000 | ' |
Number of Held-to-maturity Securities In Continuous Loss Position Less Than 12 Months | 10 | ' | 10 | ' | 123 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 58,842,000 | ' | 58,842,000 | ' | 14,797,000 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | ' | ' | 1,553,000 | ' | 1,176,000 | ' |
Number of Held-to-maturity Securities In Continuous Loss Position 12 Months or Greater | 62 | ' | 62 | ' | 17 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value | 65,307,000 | ' | 65,307,000 | ' | 123,172,000 | ' |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses | ' | ' | 1,705,000 | ' | 6,764,000 | ' |
Number of Held-to-maturity Securities In Continuous Loss Position Aggregate | 72 | ' | 72 | ' | 140 | ' |
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Gross Realized Gains | 21,000 | 0 | 21,000 | 1,000 | ' | ' |
Available-for-sale Securities, Gross Realized Losses | 0 | 0 | 0 | 0 | ' | ' |
Stock Mutual Funds [Member] | ' | ' | ' | ' | ' | ' |
Unrealized Gain (Loss) on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Equity Securities, Amortized Cost Basis | 15,738,000 | ' | 15,738,000 | ' | 10,463,000 | ' |
Available-for-sale Securities, Gross Unrealized Gains | ' | ' | 2,137,000 | ' | 1,506,000 | ' |
Available-for-sale Securities, Gross Unrealized Losses | ' | ' | 0 | ' | 0 | ' |
Available-for-sale Securities, Fair Value | 17,875,000 | ' | 17,875,000 | ' | 11,969,000 | ' |
Bond Mutual Funds [Member] | ' | ' | ' | ' | ' | ' |
Unrealized Gain (Loss) on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Equity Securities, Amortized Cost Basis | 35,869,000 | ' | 35,869,000 | ' | 35,080,000 | ' |
Available-for-sale Securities, Gross Unrealized Gains | ' | ' | 250,000 | ' | 0 | ' |
Available-for-sale Securities, Gross Unrealized Losses | ' | ' | 88,000 | ' | 417,000 | ' |
Available-for-sale Securities, Fair Value | 36,031,000 | ' | 36,031,000 | ' | 34,663,000 | ' |
Unrealized Continuous Losses on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 17,912,000 | ' | 17,912,000 | ' | 34,663,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | ' | ' | 88,000 | ' | 417,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 2 | ' | 2 | ' | 7 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 | ' | 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 | ' | 0 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 17,912,000 | ' | 17,912,000 | ' | 34,663,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | ' | ' | 88,000 | ' | 417,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 2 | ' | 2 | ' | 7 | ' |
Common Stock [Member] | ' | ' | ' | ' | ' | ' |
Unrealized Gain (Loss) on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Equity Securities, Amortized Cost Basis | 727,000 | ' | 727,000 | ' | 17,000 | ' |
Available-for-sale Securities, Gross Unrealized Gains | ' | ' | 37,000 | ' | 0 | ' |
Available-for-sale Securities, Gross Unrealized Losses | ' | ' | 7,000 | ' | 5,000 | ' |
Available-for-sale Securities, Fair Value | 757,000 | ' | 757,000 | ' | 12,000 | ' |
Unrealized Continuous Losses on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 0 | ' | 0 | ' | 12,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | ' | ' | 0 | ' | 5,000 | ' |
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 | 10,000 | ' | 10,000 | ' | 0 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | ' | ' | 7,000 | ' | 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 | 10,000 | ' | 10,000 | ' | 12,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | ' | ' | 7,000 | ' | 5,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 1 | ' | 1 | ' | 1 | ' |
Preferred Stock [Member] | ' | ' | ' | ' | ' | ' |
Unrealized Gain (Loss) on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Equity Securities, Amortized Cost Basis | 1,741,000 | ' | 1,741,000 | ' | 323,000 | ' |
Available-for-sale Securities, Gross Unrealized Gains | ' | ' | 233,000 | ' | 292,000 | ' |
Available-for-sale Securities, Gross Unrealized Losses | ' | ' | 0 | ' | 0 | ' |
Available-for-sale Securities, Fair Value | 1,974,000 | ' | 1,974,000 | ' | 615,000 | ' |
Unrealized Continuous Losses on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 0 | ' | 0 | ' | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | ' | ' | 0 | ' | ' | ' |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 0 | ' | 0 | ' | ' | ' |
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 | ' | ' | ' |
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 | 0 | ' | 0 | ' | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | ' | ' | 0 | ' | ' | ' |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 0 | ' | 0 | ' | ' | ' |
Equity Securities [Member] | ' | ' | ' | ' | ' | ' |
Unrealized Gain (Loss) on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Equity Securities, Amortized Cost Basis | 54,075,000 | ' | 54,075,000 | ' | 45,883,000 | ' |
Available-for-sale Securities, Gross Unrealized Gains | ' | ' | 2,657,000 | ' | 1,798,000 | ' |
Available-for-sale Securities, Gross Unrealized Losses | ' | ' | 95,000 | ' | 422,000 | ' |
Available-for-sale Securities, Fair Value | 56,637,000 | ' | 56,637,000 | ' | 47,259,000 | ' |
Unrealized Continuous Losses on Investments [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 17,912,000 | ' | 17,912,000 | ' | 34,675,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | ' | ' | 88,000 | ' | 422,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months | 2 | ' | 2 | ' | 8 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 10,000 | ' | 10,000 | ' | 0 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | ' | ' | 7,000 | ' | 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 | 17,922,000 | ' | 17,922,000 | ' | 34,675,000 | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | ' | ' | 95,000 | ' | 422,000 | ' |
Number of Available-for-sale Securities In Continuous Loss Position Aggregate | 3 | ' | 3 | ' | 8 | ' |
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract] | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Gross Realized Gains | 63,000 | 0 | 63,000 | 0 | ' | ' |
Available-for-sale Securities, Gross Realized Losses | $169,000 | $0 | $169,000 | $0 | ' | ' |
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] | ' | ' | ' | ' | ' | ' |
Schedule of Fixed Maturities [Abstract] | ' | ' | ' | ' | ' | ' |
Percent of residential mortgage backed to securities | 92.10% | ' | 92.10% | ' | ' | ' |