Stockholders' Equity (Deficit) - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended	36 Months Ended
	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Information regarding repurchase of Class A common stock
Treasury Stock, Number of Shares Held				56,118,260
Accumulated Earnings (Deficit)
Information regarding repurchase of Class A common stock
Value of treasury stock at cost		$ 1,568,897
Class A common stock
Stockholders Equity (Deficit)
Maximum amount authorized for common stock repurchase under common stock repurchase program		1,000,000	$ 1,000,000
Amount authorized for common stock repurchase under common stock repurchase program		1,000,000	$ 1,000,000
Information regarding repurchase of Class A common stock
Total number of shares repurchased			0
Dollar value of shares repurchased		$ 1,000,000
Number of treasury stock shares retired	56,118,260