CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net Income	$ 45,619	$ 17,215	$ 23,691
Other comprehensive income/(loss):
Unrealized derivative gains/(losses) on interest rate caps	39	199	(6)
Total other comprehensive income/(loss):	39	199	(6)
Total comprehensive income	$ 45,658	$ 17,414	$ 23,685