Consolidated Statement Of Stockholders' Equity (USD $) In Thousands, except Share data	Class A Common Stock [Member]	Class B Common Stock [Member]	Additional Paid In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interest [Member]	Total
Beginning balance at Dec. 31, 2011	$ 859	$ 536	$ 891,899	$ (796,121)	$ (11,186)	$ 202	$ 86,189
Beginning balance, shares at Dec. 31, 2011	85,935,116	53,563,460
Exercise of stock options and tax deficiency, shares	23,894
Exercise of stock options and tax deficiency			152				152
Conversion of Class B shares to Class A shares, shares	1,068,224	(1,068,224)
Conversion of Class B shares to Class A shares	11	(11)
Other comprehensive income					1,970		1,970
Non-cash equity compensation			1,267				1,267
Net income				6,188			6,188
Ending balance at Mar. 31, 2012	$ 870	$ 525	$ 893,318	$ (789,933)	$ (9,216)	$ 202	$ 95,766
Ending balance, shares at Mar. 31, 2012	87,027,234	52,495,236