Other Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Assets [Abstract]
Capitalized selling and marketing costs(1)	$ 11,232	$ 10,101
Deferred tax asset	6,317	8,434
Property, Plant and Equipment, Net	603	857
Insurance Settlements Receivable	1,202	0
Prepaid Expense	4,937	1,907
Total other assets	24,291	21,299
Capitalized Sales and Marketing Amortized	11,300	$ 9,200	$ 4,800
Estimated probable recoveries	$ 600