Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Comprehensive Income

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Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Statement of Comprehensive Income [Abstract]        
Net income $ 41,632 $ 40,940 $ 75,321 $ 65,122
Other comprehensive income (loss):        
Change in fair value of derivative instrument, net of tax 18 (469) (482) (489)
Other comprehensive income (loss), net of tax 18 (469) (482) (489)
Comprehensive income $ 41,650 $ 40,471 $ 74,839 $ 64,633