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, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Statement of Other Comprehensive Income [Abstract]        
Net income $ 43,280 $ 30,747 $ 74,824 $ 56,917
Other comprehensive income:        
Change in fair value of derivative instrument, net of tax 1,563 0 1,618 0
Other comprehensive income, net of tax 1,563 0 1,618 0
Comprehensive income $ 44,843 $ 30,747 $ 76,442 $ 56,917