Income Taxes - Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Intangible assets	$ (7,858)	$ (17,943)
Accrued compensation	6,163	6,251
Fixed assets	(3,155)	(5,192)
Program development costs	11,668	13,310
Equity-based compensation	4,249	4,700
Other	1,228	1,030
Total net deferred tax asset	$ 12,295	$ 2,156