Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 39,978	$ 37,839	$ 75,657	$ 76,271
Net income (loss) attributable to common stockholders	39,979	37,839	75,658	76,271
Other comprehensive income (loss):
Increase (decrease) in fair value of cash flow hedge	3,451	(727)	4,117	(2,373)
Less: reclassification adjustment for amounts recognized in net income	(350)	76	(641)	352
Total other comprehensive income (loss)	(3,801)	803	(4,758)	2,725
Comprehensive income	36,177	38,642	70,899	78,996
Less: comprehensive loss attributable to noncontrolling interest	1	0	1	0
Comprehensive income	$ 36,178	$ 38,642	$ 70,900	$ 78,996