Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
NET INCOME	$ 45,261	$ 26,162	$ 127,385	$ 74,327
Other comprehensive loss, net of taxes:
Foreign currency translation adjustment	(36,307)	(21,938)		(7,329)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax			(56,902)	(7,329)
Net unrealized (loss) gain on interest rate swaps, net of tax	(6,158)	2,366	(6,919)	(494)
Unrealized (loss) gain arising during the period, net of tax benefit (provision) of $4,919, ($346), $7,744, and $3,472, respectively	(8,199)	577	(12,907)	(5,787)
Reclassification adjustment for loss included in interest expense, net of tax provision of $1,224, $1,074, $3,593, and $3,176, respectively	2,041	1,789	5,988	5,293
OTHER COMPREHENSIVE LOSS, NET OF TAXES	(42,465)	(19,572)	(63,821)	(7,823)
COMPREHENSIVE INCOME	$ 2,796	$ 6,590	$ 63,564	$ 66,504