Investments Unrealized Loss Position (Details) (USD $) | 3 Months Ended | 12 Months Ended |
In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013 |
Gain (Loss) on Investments [Line Items] | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $6,824 | $9,778 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | 125 | 71 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss | 163 | 168 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 5,117 | 4,083 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 11,941 | 13,861 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss | 288 | 239 |
US Government Agencies Debt Securities [Member] | ' | ' |
Gain (Loss) on Investments [Line Items] | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 2,514 | 4,008 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | 19 | 30 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss | 2 | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 861 | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 3,375 | 4,008 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss | 21 | 30 |
Fixed Maturities [Member] | ' | ' |
Gain (Loss) on Investments [Line Items] | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 5,206 | 8,809 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | 32 | 36 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss | 163 | 163 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 5,117 | 4,082 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 10,323 | 12,891 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss | 195 | 199 |
Foreign Government Debt Securities [Member] | ' | ' |
Gain (Loss) on Investments [Line Items] | ' | ' |
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 Loss | 0 | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss | 161 | 153 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 4,256 | 4,082 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 4,256 | 4,082 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss | 161 | 153 |
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] | ' | ' |
Gain (Loss) on Investments [Line Items] | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 603 | 919 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | 1 | 2 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss | 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, Fair Value | 603 | 919 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss | 1 | 2 |
Asset-backed Securities [Member] | ' | ' |
Gain (Loss) on Investments [Line Items] | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 1,273 | 3,474 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | 2 | 3 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss | 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, Fair Value | 1,273 | 3,474 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss | 2 | 3 |
Corporate Debt Securities [Member] | ' | ' |
Gain (Loss) on Investments [Line Items] | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 816 | 408 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | 10 | 1 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss | 0 | 10 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 816 | 408 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss | 10 | 11 |
Equity Securities [Member] | ' | ' |
Gain (Loss) on Investments [Line Items] | ' | ' |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 1,618 | 969 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | 93 | 35 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss | 0 | 5 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 | 1 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 1,618 | 970 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss | $93 | $40 |