CONSOLIDATED STATEMENT OF EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Noncontrolling Interests	Class A Common Stock	Class A Common Stock Common Stock	Class B Common Stock	Class B Common Stock Common Stock
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		26,028,357
Increase (Decrease) in Stockholders' Equity
Dividends declared and paid on Class A and Class B Common Stock	(29,284)		(29,284)
Repurchases of Class A Common Stock	(82,371)	(82,342)					$ (29)
Repurchases of Class A Common Stock (in shares)							(2,910,106)
Class A Common Stock issued pursuant to employee benefit plans	7,525	7,523					$ 2
Class A Common Stock issued pursuant to employee benefit plans (in shares)							155,182
Tax benefit on share based awards	1,361	1,361
Distributions to noncontrolling interests	(2,704)				(2,704)
Other comprehensive income	684			684
Net income	69,258		68,493		765
BALANCE at Jun. 30, 2014	370,173	1,021,460	(657,787)	(1,869)	7,395		$ 714		$ 260
BALANCE (in shares) at Jun. 30, 2014							71,390,645		26,028,357
BALANCE at Dec. 31, 2014	405,343	979,202	(545,820)	(6,455)	(22,539)		$ 696		$ 259
BALANCE (in shares) at Dec. 31, 2014						69,578,899	69,578,899	25,928,357	25,928,357
Increase (Decrease) in Stockholders' Equity
Dividends declared and paid on Class A and Class B Common Stock	(31,464)		(31,464)
Repurchases of Class A Common Stock	$ (7,803)	(7,800)					$ (3)
Repurchases of Class A Common Stock (in shares)	(300,000)						(304,787)
Class A Common Stock issued pursuant to employee benefit plans	$ 9,512	9,510					$ 2
Class A Common Stock issued pursuant to employee benefit plans (in shares)							261,050
Tax benefit on share based awards	695	695
Distributions to noncontrolling interests	(2,464)				(2,464)
Other comprehensive income	168			168
Issuance of subsidiary stock awards	1,037				1,037
Net income	71,235		70,069		1,166
BALANCE at Jun. 30, 2015	$ 446,259	$ 981,607	$ (507,215)	$ (6,287)	$ (22,800)		$ 695		$ 259
BALANCE (in shares) at Jun. 30, 2015						69,535,162	69,535,162	25,928,357	25,928,357