Deferred Policy Acquisition Costs Deferred Costs, Capitalized, Prepaid, and Other Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Deferred Policy Acquisition Costs Disclosures [Abstract]
Deferred policy acquisition costs, beg. balance	$ 46,732	$ 31,925
Deferred Policy Acquisition Costs, Additions	134,588	101,221
Amortization	(115,847)	(86,414)
Deferred policy acquisition costs, end. balance	$ 65,473	$ 46,732