CONSOLIDATED STATEMENT OF EQUITY (DEFICIT) (USD $) In Thousands, except Share data, unless otherwise specified	Total USD ($)	Additional Paid-In Capital USD ($)	Accumulated Deficit USD ($)	Accumulated Other Comprehensive Loss USD ($)	Noncontrolling Interests USD ($)	Class A Common Stock	Class A Common Stock Common Stock USD ($)	Class B Common Stock	Class B Common Stock Common Stock USD ($)
BALANCE at Dec. 31, 2012	$ (100,053)	$ 600,928	$ (713,697)	$ (4,993)	$ 16,897		$ 523		$ 289
BALANCE (in shares) at Dec. 31, 2012							52,332,012		28,933,859
Increase (Decrease) in Stockholders' Equity
Dividends declared and paid on Class A and Class B Common Stock	(12,048)		(12,048)
Class A Common Stock issued pursuant to employee benefit plans	5,025	5,021					4
Class A Common Stock issued pursuant to employee benefit plans (in shares)							386,380
Class B Common Stock converted into Class A Common Stock							1		(1)
Class B Common Stock converted into Class A Common Stock (in shares)							87,600		(87,600)
Class A Common Stock issued upon exercise of stock options	854	853					1
Class A Common Stock issued upon exercise of stock options (in shares)							73,000
Class A Common Stock sold by variable interest entity, net of taxes	1,045	1,045
Tax benefit on share based awards	388	388
Distributions to noncontrolling interests	(9,329)				(9,329)
Other Comprehensive Income	(39)			(39)
Net income	16,870		16,997		(127)
BALANCE at Mar. 31, 2013	(97,287)	608,235	(708,748)	(5,032)	7,441		529		288
BALANCE (in shares) at Mar. 31, 2013							52,878,992		28,846,259
BALANCE at Dec. 31, 2013	405,704	1,094,918	(696,996)	(2,553)	9,334		741		260
BALANCE (in shares) at Dec. 31, 2013						74,145,569	74,145,569	26,028,357	26,028,357
Increase (Decrease) in Stockholders' Equity
Dividends declared and paid on Class A and Class B Common Stock	(14,696)		(14,696)
Repurchase of Class A Common Stock	(82,371)	(82,342)					(29)
Repurchase of Class A Common Stock (in shares)							(2,910,106)
Class A Common Stock issued pursuant to employee benefit plans	4,952	4,951					1
Class A Common Stock issued pursuant to employee benefit plans (in shares)							106,453
Tax benefit on share based awards	1,342	1,342
Distributions to noncontrolling interests	(260)				(260)
Other Comprehensive Income	39			39
Net income	27,657		27,158		499
BALANCE at Mar. 31, 2014	$ 342,367	$ 1,018,869	$ (684,534)	$ (2,514)	$ 9,573		$ 713		$ 260
BALANCE (in shares) at Mar. 31, 2014						71,341,916	71,341,916	26,028,357	26,028,357