Acquisitions (Details) (USD $)	Dec. 31, 2011
Business Acquisition, Purchase Price Allocation [Abstract]
Fixed maturity securities	$ 3,213,000
Real Estate	256,209,000
Cash and cash equivalents	12,172,000
Goodwill	251,000
Other assets	6,566,000
Total assets acquired	278,411,000
Other liabilities assumed	4,247,000
Net assets acquired	274,164,000
London Acquisition [Member]
Business Acquisition [Line Items]
Business acquisition, cost of acquired entity, cash paid	251,000,000
Inactive Insurance Company [Member]
Business Acquisition [Line Items]
Business acquisition, cost of acquired entity, cash paid	23,000,000
Business Acquisition, Purchase Price Allocation [Abstract]
Total assets acquired	$ 2,000,000