CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY AND NONCONTROLLING INTEREST (USD $) In Thousands	Total	Convertible Preferred Stock [Member]	Common Stock Class A [Member]	Common Stock Class B [Member]	Common Stock Class C [Member]	Common Stock Class D [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Noncontrolling Interest [Member]
BALANCE at Dec. 31, 2014	$ 220,572	$ 0	$ 2	$ 3	$ 3	$ 42	$ (115)	$ 1,006,635	$ (987,672)	$ 201,674
Consolidated net (loss) income	(12,410)	0	0	0	0	0	0	0	(18,489)	6,079
Net change in unrealized loss on investment activities	116	0	0	0	0	0	116	0	0	0
Conversion of 58,458 shares of Class A common stock to Class D common stock	0	0	0	0	0	0	0	0	0	0
Dividends paid to noncontrolling interest	(5,347)	0	0	0	0	0	0	0	0	(5,347)
Adjustment of redeemable noncontrolling interests to estimated redemption value	(447)	0	0	0	0	0	0	(447)	0	0
Stock-based compensation expense	1,581	0	0	0	0	0	0	1,581	0	0
BALANCE at Mar. 31, 2015	$ 204,065	$ 0	$ 2	$ 3	$ 3	$ 42	$ 1	$ 1,007,769	$ (1,006,161)	$ 202,406