Investments Unrealized Losses (Details) $ in Thousands | Mar. 31, 2016USD ($)security | Dec. 31, 2015USD ($)security |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | $ 40,460 | $ 111,416 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | (1,020) | (2,152) |
Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value | 3,850 | 12,153 |
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss | (190) | (418) |
Available-for-sale securities, continuous unrealized loss position, fair value | 44,310 | 123,569 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | (1,210) | (2,570) |
US Government Agencies Debt Securities | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | 227 | 9,712 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | (1) | (49) |
Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value | 0 | 3,256 |
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss | 0 | (35) |
Available-for-sale securities, continuous unrealized loss position, fair value | 227 | 12,968 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | (1) | (84) |
US States and Political Subdivisions Debt Securities | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | 0 | 5,870 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | 0 | (46) |
Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value | 0 | 553 |
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss | 0 | (6) |
Available-for-sale securities, continuous unrealized loss position, fair value | 0 | 6,423 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | 0 | (52) |
Total Corporate | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | 15,217 | 43,379 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | (782) | (1,514) |
Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value | 1,124 | 1,894 |
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss | (181) | (197) |
Available-for-sale securities, continuous unrealized loss position, fair value | 16,341 | 45,273 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | (963) | (1,711) |
Corporate Debt Securities, Banking and Financial Services | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | 4,824 | 12,216 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | (60) | (161) |
Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value | 256 | 595 |
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss | (6) | (5) |
Available-for-sale securities, continuous unrealized loss position, fair value | 5,080 | 12,811 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | (66) | (166) |
Corporate Debt Securities, Consumer Goods | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | 1,677 | 6,044 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | (54) | (121) |
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, accumulated loss | 0 | 0 |
Available-for-sale securities, continuous unrealized loss position, fair value | 1,677 | 6,044 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | (54) | (121) |
Corporate Debt Securities, Capital Goods | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | 2,383 | 9,425 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | (286) | (428) |
Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value | 221 | 755 |
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss | (32) | (128) |
Available-for-sale securities, continuous unrealized loss position, fair value | 2,604 | 10,180 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | (318) | (556) |
Corporate Debt Securities, Energy | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | 2,449 | 3,862 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | (164) | (337) |
Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value | 366 | 544 |
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss | (136) | (64) |
Available-for-sale securities, continuous unrealized loss position, fair value | 2,815 | 4,406 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | (300) | (401) |
Corporate Debt Securities, Telecommunications and Utilities | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | 3,884 | 8,811 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | (218) | (450) |
Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value | 281 | 0 |
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss | (7) | 0 |
Available-for-sale securities, continuous unrealized loss position, fair value | 4,165 | 8,811 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | (225) | (450) |
Corporate Debt Securities, Health Care | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | 0 | 3,021 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | 0 | (17) |
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, accumulated loss | 0 | 0 |
Available-for-sale securities, continuous unrealized loss position, fair value | 0 | 3,021 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | 0 | (17) |
Fixed Income, U.S., Mortgage Backed, Total | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | 16,317 | 35,190 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | (184) | (384) |
Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value | 2,472 | 5,366 |
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss | (9) | (173) |
Available-for-sale securities, continuous unrealized loss position, fair value | 18,789 | 40,556 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | (193) | (557) |
Fixed Income, U.S., Mortgage Backed, Agency | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | 5,802 | 25,168 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | (61) | (255) |
Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value | 1,961 | 1,921 |
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss | (7) | (58) |
Available-for-sale securities, continuous unrealized loss position, fair value | 7,763 | 27,089 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | (68) | (313) |
Commercial Mortgage Backed Securities | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | 10,515 | 10,022 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | (123) | (129) |
Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value | 511 | 3,445 |
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss | (2) | (115) |
Available-for-sale securities, continuous unrealized loss position, fair value | 11,026 | 13,467 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | (125) | (244) |
Asset-backed Securities | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | 7,714 | 16,203 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | (38) | (113) |
Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value | 254 | 1,084 |
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss | 0 | (7) |
Available-for-sale securities, continuous unrealized loss position, fair value | 7,968 | 17,287 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | (38) | (120) |
Fixed income securities | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | 39,475 | 110,354 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | (1,005) | (2,106) |
Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value | 3,850 | 12,153 |
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss | (190) | (418) |
Available-for-sale securities, continuous unrealized loss position, fair value | 43,325 | 122,507 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | $ (1,195) | $ (2,524) |
Available-for-sale, securities in unrealized loss positions, qualitative disclosure, number of positions | security | 165 | 435 |
Available-for-sale, securities in unrealized loss positions, qualitative disclosure, number of positions, greater than or equal to one year | security | 16 | 35 |
Equities | | |
Gain (Loss) on Investments [Line Items] | | |
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value | $ 985 | $ 1,062 |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss | (15) | (46) |
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, accumulated loss | 0 | 0 |
Available-for-sale securities, continuous unrealized loss position, fair value | 985 | 1,062 |
Available-for-sale securities, continuous unrealized loss position, accumulated loss | $ (15) | $ (46) |
Available-for-sale, securities in unrealized loss positions, qualitative disclosure, number of positions | security | 1 | 1 |