Redeemable Noncontrolling Interests and Equity - Schedule of Changes in Redeemable Noncontrolling Interest,Total Stockholders' Equity and Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Minority Interest [Line Items]
Balance at beginning of period			$ 659,560
Balance at beginning of period			147,139
Balance at beginning of period			554,069
Balance at beginning of period			105,491
Exercise of stock options			3,863
Issuance of restricted stock units, net of tax withholdings			(312)
Shares issued in connection with the Employee Stock Purchase Plan			1,256
Stock based compensation			14,111
Offering costs in connection with initial public offering			(437)
Balance at end of period	$ 150,903		150,903
Contributions from noncontrolling interests			318,519
Distributions to noncontrolling interests			(19,218)
Net income (loss) attributable to common stockholders	16,878	$ (2,768)	62,655	$ (13,223)
Other comprehensive loss, net of taxes			(4,266)
Balance at end of period	630,939		630,939
Net income (loss) attributable to noncontrolling interest	91,846	$ 69,447	280,153	$ 161,377
Balance at end of period	214,359		214,359
Net income (loss) including portion attributable to noncontrolling interest			(127,778)
Balance at end of period	845,298		845,298
Redeemable Non Controlling Interests
Minority Interest [Line Items]
Balance at beginning of period			147,139
Contributions from redeemable noncontrolling interests			103,688
Distributions to redeemable noncontrolling interests			(10,204)
Net income (loss) attributable to redeemable noncontrolling interests			(89,720)
Balance at end of period	150,903		150,903
Total Stockholders' Equity
Minority Interest [Line Items]
Balance at beginning of period			554,069
Exercise of stock options			3,863
Issuance of restricted stock units, net of tax withholdings			(312)
Shares issued in connection with the Employee Stock Purchase Plan			1,256
Stock based compensation			14,111
Offering costs in connection with initial public offering			(437)
Net income (loss) attributable to common stockholders			62,655
Other comprehensive loss, net of taxes			(4,266)
Balance at end of period	630,939		630,939
Noncontrolling Interests
Minority Interest [Line Items]
Balance at beginning of period			105,491
Contributions from noncontrolling interests			318,519
Distributions to noncontrolling interests			(19,218)
Net income (loss) attributable to noncontrolling interest			(190,433)
Balance at end of period	$ 214,359		$ 214,359