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Selected Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Stock options exercised, shares										18,975,000	18,975,000
Net Revenues	$ 542,674	$ 546,313	$ 559,867	$ 550,578	$ 531,593	$ 738,843	$ 722,534	$ 708,349	$ 2,199,432	$ 2,701,319	$ 2,894,438
Operating Income (Loss)	62,353	100,530	98,182	83,558	22,247	73,774	86,979	68,516	344,623	251,516	278,301
Net Income (Loss) Attributable to Parent	$ (6,869)	$ 25,425	$ (6,425)	$ 35,103	$ (32,423)	$ (15,105)	$ 669	$ (6,182)	$ 47,234	$ (53,041)	$ (80,264)
Basic net income (loss) per common share	$ (0.06)	$ 0.23	$ (0.06)	$ 0.31	$ (0.29)	$ (0.14)	$ 0.01	$ (0.06)	$ 0.42	$ (0.48)	$ (0.83)
Diluted net income (loss) per common share	$ (0.06)	$ 0.22	$ (0.06)	$ 0.31	$ (0.29)	$ (0.14)	$ 0.01	$ (0.06)	$ 0.42	$ (0.48)	$ (0.83)

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.