Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Statement of Comprehensive Income [Abstract]    
Net income $ 22,563 $ 13,848
Other comprehensive income (loss):    
Change in net unrealized losses on cash flow hedges (852) (402)
Net cash flow hedge losses reclassified to operations 317 323
Total comprehensive income $ 22,028 $ 13,769