Reinsurance (Details) (USD $)			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Supplier Concentration Risk Reinsurance Recoverable reinsurance_company	Dec. 31, 2011 Single life and joint first-to-die policies	Dec. 31, 2010 Single life and joint first-to-die policies	Dec. 31, 2010 Joint last-to-die policies	Dec. 31, 2011 Second-to-die policies
Reinsurance Retention Policy [Line Items]
Concentration Risk, Number Of Major Reinsurance Companies			5
Retention limit				$ 5,000,000	$ 10,000,000	$ 12,000,000	$ 6,000,000
Trust agreements and irrevocable letters of credit amount	26,700,000
Reinsurance recoverable	$ 500,600,000	$ 427,100,000
Reinsurance recoverable percentage			73.00%