Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income	$ 56,599	$ 58,935	$ 151,221	$ 123,895
Other comprehensive income, net of tax:
Unrealized gain on interest rate swaps				2,228
Total comprehensive income	$ 56,599	$ 58,935	$ 151,221	$ 126,123