Condensed Consolidated Statement Of Shareholders' Equity - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands	Total	Special Cash Dividend	Regular Cash Dividend	Class A Common Stock	Class B Common Stock	Retained Deficit	Accumulated Other Comprehensive (Loss) Income	Additional Paid-In Capital	Additional Paid-In Capital Special Cash Dividend	Additional Paid-In Capital Regular Cash Dividend	Treasury Stock	Non- controlling Interest
Beginning balance, Shares at Dec. 31, 2016				100,416,516	5,605
Beginning Balance at Dec. 31, 2016	$ 3,545,683			$ 100	$ 0	$ (308,105)	$ (81,782)	$ 4,561,760			$ (632,207)	$ 5,917
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(134,683)					(134,683)
Other comprehensive income, net of taxes	10,535						10,535
Comprehensive (Loss) Income	(124,148)
Special dividends declared to shareholders and warrant holders, $5.77 per share	(65,392)	$ (499,107)							$ (499,107)
Regular dividends declared to shareholders and warrant holders, $0.75 per share			$ (65,392)							$ (65,392)
Warrant exercises, shares				91,650
Stock-based compensation	27,658							27,658
Net share settlements of stock-based awards, shares				894,036
Net share settlements of stock-based awards	3,201			$ 1				3,187			13
Cumulative effect of a change in accounting principle	164					(254)		418
Contributions from noncontrolling interest	1,318											1,318
Ending balance, Shares at Sep. 30, 2017				101,402,202	5,605
Ending Balance at Sep. 30, 2017	$ 2,889,377			$ 101	$ 0	$ (443,042)	$ (71,247)	$ 4,028,524			$ (632,194)	$ 7,235