Acquisitions (Details) (USD $)			1 Months Ended	12 Months Ended				12 Months Ended			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jan. 31, 2013 Worldwide Supplier of After-market (OEM) Parts [Member]	Dec. 31, 2013 Worldwide Supplier of After-market (OEM) Parts [Member]	Dec. 31, 2012 Worldwide Supplier of After-market (OEM) Parts [Member]	Dec. 31, 2013 London Acquisition, Inactive insurance Company, and Worldwide Supplier of After-market (OEM) Parts [Member]	Dec. 31, 2012 London Acquisition, Inactive insurance Company, and Worldwide Supplier of After-market (OEM) Parts [Member]	Dec. 31, 2011 London Acquisition [Member]	Dec. 31, 2011 Inactive Insurance Company [Member]	Dec. 31, 2011 London Acquisition and Inactive Insurance Company [Member]	Dec. 31, 2013 Minimum Worldwide Supplier of After-market (OEM) Parts [Member]	Dec. 31, 2013 Maximum Worldwide Supplier of After-market (OEM) Parts [Member]
Business Acquisition [Line Items]
Business acquisition, cost of acquired entity, cash paid			$ 43,000,000		$ 43,000,000			$ 251,000,000	$ 23,000,000
Business Acquisition, Percentage of Voting Interests Acquired			51.00%		49.00%
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life											2 years	15 years
Indefinite-lived Intangible Assets Acquired				3,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]
Fixed maturity securities						0	3,213,000
Real estate						0	256,209,000
Cash and cash equivalents						3,911,000	12,172,000
Real estate, furniture and equipment						898,000	0
Goodwill	110,146,000	87,865,000				19,664,000	251,000
Intangible assets						44,800,000	0			2,000,000
Other assets						60,661,000	6,566,000
Total assets acquired						129,934,000	278,411,000
Debt						(27,612,000)	0
Other liabilities assumed						(17,076,000)	(4,247,000)
Net assets acquired						$ 85,246,000	$ 274,164,000