CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) [Abstract]
Depreciation and amortization	$ 684,448	$ 503,662	$ 238,153
Non-cash stock-based compensation expense	$ 31,651	$ 28,299	$ 25,978