Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net (loss) income attributable to common stockholders	$ (13,862)	$ 28,032
Other comprehensive (loss) income:
Unrealized (loss) gain on derivatives, net of income taxes	(17,013)	16,171
Interest expense on derivatives recognized into earnings, net of income taxes	(989)	(1,233)
Other comprehensive (loss) income	(18,002)	14,938
Comprehensive (loss) income	$ (31,864)	$ 42,970