CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Net earnings	$ 29,894	$ 51,636
Other comprehensive loss, net of tax:
Cash flow hedges	(226)	0
Foreign currency translation adjustments	(1,912)	(12,498)
Total other comprehensive loss	(2,138)	(12,498)
Comprehensive income	$ 27,756	$ 39,138