Investments - Available-for-sale Securities in Unrealized Loss Positions (Details) $ in Thousands | Mar. 31, 2017USD ($)security | Dec. 31, 2016USD ($)security |
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract] | | |
Less than 12 months, number of issues | security | 118 | 201 |
Greater than 12 months, number of issues | security | 10 | 15 |
Number of Issues | security | 128 | 216 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract] | | |
Less than 12 months, fair value | $ 62,605 | $ 62,307 |
Greater than 12 months, fair value | 1,738 | 4,341 |
Fair Value | 64,343 | 66,648 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract] | | |
Less than 12 months, unrealized losses | (1,250) | (1,260) |
Greater than 12 months, unrealized losses | (22) | (36) |
Unrealized losses | $ (1,272) | $ (1,296) |
Total fixed maturity securities available for sale | | |
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract] | | |
Less than 12 months, number of issues | security | 97 | 125 |
Greater than 12 months, number of issues | security | 8 | 13 |
Number of Issues | security | 105 | 138 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract] | | |
Less than 12 months, fair value | $ 61,564 | $ 59,835 |
Greater than 12 months, fair value | 1,667 | 4,275 |
Fair Value | 63,231 | 64,110 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract] | | |
Less than 12 months, unrealized losses | (1,177) | (1,199) |
Greater than 12 months, unrealized losses | (16) | (27) |
Unrealized losses | $ (1,193) | $ (1,226) |
U.S. Government obligations | | |
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract] | | |
Less than 12 months, number of issues | security | 12 | 15 |
Greater than 12 months, number of issues | security | 0 | 0 |
Number of Issues | security | 12 | 15 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract] | | |
Less than 12 months, fair value | $ 4,439 | $ 4,539 |
Greater than 12 months, fair value | 0 | 0 |
Fair Value | 4,439 | 4,539 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract] | | |
Less than 12 months, unrealized losses | (35) | (36) |
Greater than 12 months, unrealized losses | 0 | 0 |
Unrealized losses | $ (35) | $ (36) |
State and local government | | |
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract] | | |
Less than 12 months, number of issues | security | 19 | 29 |
Greater than 12 months, number of issues | security | 1 | 1 |
Number of Issues | security | 20 | 30 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract] | | |
Less than 12 months, fair value | $ 6,319 | $ 8,217 |
Greater than 12 months, fair value | 99 | 104 |
Fair Value | 6,418 | 8,321 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract] | | |
Less than 12 months, unrealized losses | (161) | (202) |
Greater than 12 months, unrealized losses | (2) | (3) |
Unrealized losses | $ (163) | $ (205) |
Corporate debt | | |
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract] | | |
Less than 12 months, number of issues | security | 19 | 22 |
Greater than 12 months, number of issues | security | 3 | 7 |
Number of Issues | security | 22 | 29 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract] | | |
Less than 12 months, fair value | $ 10,521 | $ 9,031 |
Greater than 12 months, fair value | 1,021 | 3,369 |
Fair Value | 11,542 | 12,400 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract] | | |
Less than 12 months, unrealized losses | (227) | (239) |
Greater than 12 months, unrealized losses | (8) | (15) |
Unrealized losses | $ (235) | $ (254) |
Commercial mortgage-backed and other asset-backed | | |
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract] | | |
Less than 12 months, number of issues | security | 47 | 59 |
Greater than 12 months, number of issues | security | 4 | 5 |
Number of Issues | security | 51 | 64 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract] | | |
Less than 12 months, fair value | $ 40,285 | $ 38,048 |
Greater than 12 months, fair value | 547 | 802 |
Fair Value | 40,832 | 38,850 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract] | | |
Less than 12 months, unrealized losses | (754) | (722) |
Greater than 12 months, unrealized losses | (6) | (9) |
Unrealized losses | $ (760) | $ (731) |
Common stocks | | |
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract] | | |
Less than 12 months, number of issues | security | 21 | 76 |
Greater than 12 months, number of issues | security | 2 | 2 |
Number of Issues | security | 23 | 78 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract] | | |
Less than 12 months, fair value | $ 1,041 | $ 2,472 |
Greater than 12 months, fair value | 71 | 66 |
Fair Value | 1,112 | 2,538 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract] | | |
Less than 12 months, unrealized losses | (73) | (61) |
Greater than 12 months, unrealized losses | (6) | (9) |
Unrealized losses | $ (79) | $ (70) |