General (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Potentially dilutive securities (in shares)	5	18	2	31
Deferred policy acquisition cost amortization	$ 132,881	$ 131,090	$ 401,868	$ 393,964
Advertising expenses			$ 39,023	$ 17,098