General (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Potentially dilutive securities (in shares)	22	74	29	52
Deferred policy acquisition cost amortization	$ 140,203	$ 132,881	$ 421,685	$ 401,868
Advertising expenses			$ 34,000	$ 39,000