Other Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Assets [Abstract]
Property, equipment and capitalized selling and marketing costs, net(1)(2)	$ 11,738	$ 603
Deferred tax asset, net	13,937	6,317
Prepaid income taxes	514	0
Prepaid expenses	6,348	4,937
Warranty insurance receivable(3)	915	1,202
Capitalized selling and marketing costs(1)	0	11,232
Total other assets	33,452	24,291
Capitalized Sales and Marketing Amortized	6,200	11,300	$ 9,200
Property and Equipment Depreciation	$ 400	400	500
Estimated probable recoveries		$ 600	$ 600