Income Taxes - Schedule of Components of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax [Line Items]
Current tax provision	$ 634	$ 3,840	$ 1,459
Deferred tax provision (benefit):	(7,935)	1,824	10,963
Income tax provision (benefit)	(7,301)	5,664	12,422
United States Federal
Income Tax [Line Items]
Current tax provision	0	0	0
Deferred tax provision (benefit):	7,624	6,944	13,402
United States And Local
Income Tax [Line Items]
Current tax provision	(1,520)	1,375	907
Deferred tax provision (benefit):	(3,286)	3,195	1,971
Foreign
Income Tax [Line Items]
Current tax provision	2,154	2,465	552
Deferred tax provision (benefit):	$ (12,273)	$ (8,315)	$ (4,410)