Investments, Part IV (Details) (Recurring [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	$ 243,960	$ 258,039
Derivative financial instrument [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Liabilities at fair value		141
Fixed maturities [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	184,750	230,508
Equity securities [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	13,772	12,205
Cash equivalents [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	45,438	15,326
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	52,231	19,131
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
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	6,793	3,805
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	45,438	15,326
Significant Other Observable Inputs (Level 2) [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Assets at fair value	189,695	236,784
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
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	182,716	228,384
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	6,979	8,400
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	2,034	2,124
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
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	2,034	2,124
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