Investments, Part III (Details) (Recurring [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	$ 258,039	$ 245,215
Derivative financial instrument [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Liabilities at fair value	141	876
Fixed maturities [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	230,508	217,348
Equity securities [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	12,205	8,348
Cash equivalents [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	15,326	19,519
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	19,131	22,893
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Derivative financial instrument [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Liabilities at fair value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed maturities [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity securities [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	3,805	3,374
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Cash equivalents [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	15,326	19,519
Significant Other Observable Inputs (Level 2) [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	236,784	220,287
Significant Other Observable Inputs (Level 2) [Member] | Derivative financial instrument [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Liabilities at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	228,384	215,313
Significant Other Observable Inputs (Level 2) [Member] | Equity securities [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	8,400	4,974
Significant Other Observable Inputs (Level 2) [Member] | Cash equivalents [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	2,124	2,035
Significant Unobservable Inputs (Level 3) [Member] | Derivative financial instrument [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Liabilities at fair value	141	876
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	2,124	2,035
Significant Unobservable Inputs (Level 3) [Member] | Equity securities [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Cash equivalents [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	$ 0	$ 0