Investments (Schedule of Contractual Maturity Dates of Available for Sale Fixed Maturity Investments) (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Investments
Available for sale fixed maturity, Due within one year, Amortized Cost	$ 33,343
Available for sale fixed maturity, Due after one year through five years, Amortized Cost	233,119
Available for sale fixed maturity, Due after five years through ten years, Amortized Cost	49,168
Available for sale fixed maturity, Due after ten years, Amortized Cost	3,081
Available for sale fixed maturity, Amortized Cost	318,711	828,544
Available for sale fixed maturity, Due within one year, Fair Value	33,999
Available for sale fixed maturity, Due after one year through five years, Fair Value	252,903
Available for sale fixed maturity, Due after five years through ten years, Fair Value	55,314
Available for sale fixed maturity, Due after ten years, Fair Value	3,335
Available for sale fixed maturity, Fair Value	$ 345,551	$ 891,849

This item represents debt securities, at cost, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments, as defined), and fair value hedge accounting adjustments, if any, which are expected to mature after five years and through ten years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.

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For an unclassified balance sheet, total of debt securities categorized neither as held-to-maturity nor trading.

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