CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' (DEFICIT) EQUITY - USD ($) $ in Thousands	Total	Convertible Preferred Stock [Member]	Common Class A [Member]	Common Class B [Member]	Common Class C [Member]	Common Class D [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
BALANCE at Dec. 31, 2015	$ (71,824)	$ 0	$ 2	$ 3	$ 3	$ 42	$ 983,847	$ (1,055,721)
Consolidated net income (loss)	(423)	0	0	0	0	0	0	(423)
Tax impact of increased ownership of TV One	3,281	0	0	0	0	0	0	3,281
Stock-based compensation expense	3,410	0	0	0	0	0	3,410	0
Conversion of 410,808 shares of Class A common stock to Class D common stock	0	0	0	0	0	0	0	0
Repurchase of 1,585,703 shares of Class D common stock	(3,584)	0	0	0	0	(1)	(3,583)	0
Adjustment of redeemable noncontrolling interests to estimated redemption value	(1,986)	0	0	0	0	0	(1,986)	0
BALANCE at Dec. 31, 2016	(71,126)	0	2	3	3	41	981,688	(1,052,863)
Consolidated net income (loss)	111,887	0	0	0	0	0	0	111,887
Stock-based compensation expense	4,647	0	0	0	0	2	4,645	0
Conversion of 51,467 shares of Class A common stock to Class D common stock	0	0	0	0	0	0	0	0
Repurchase of 2,408,198 shares of Class D common stock	(4,958)	0	0	0	0	(2)	(4,956)	0
Adjustment of redeemable noncontrolling interests to estimated redemption value	2,205	0	0	0	0	0	2,205	0
BALANCE at Dec. 31, 2017	$ 42,655	$ 0	$ 2	$ 3	$ 3	$ 41	$ 983,582	$ (940,976)