Securities in an Unrealized Loss Position (Non-Investment Grade Fixed Maturity Securities) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Number of securities	31
Aggregate Fair Value	$ 116,288
Gross Unrealized Loss	14,134
Unrealized Loss Less than 5 Million [Member] | Mortgage-Backed Securities [Member]
Number of securities	10
Aggregate Fair Value	36,128
Gross Unrealized Loss	2,362
Unrealized Loss Less than 5 Million [Member] | Corporate [Member]
Number of securities	11
Aggregate Fair Value	21,363
Gross Unrealized Loss	1,914
Unrealized Loss Less than 5 Million [Member] | State And Municipal [Member]
Number of securities	4
Aggregate Fair Value	32,400
Gross Unrealized Loss	2,407
Unrealized Loss Less than 5 Million [Member] | Foreign [Member]
Number of securities	5
Aggregate Fair Value	9,339
Gross Unrealized Loss	2,092
Unrealized Loss 5 Million or Greater [Member] | Mortgage-Backed Securities [Member]
Number of securities	1	[1]
Aggregate Fair Value	17,058	[1]
Gross Unrealized Loss	$ 5,359	[1]

[1] This investment is a residential mortgage-backed security that was evaluated based on the performance of the underlying collateral under various economic and default scenarios. The security has met its contractual obligations and the Company expects that it will continue to meet those contractual payment obligations as they become due. Based on this evaluation, the Company does not consider the investment to be OTTI.