Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Net earnings	$ 82,915	$ 72,558	$ 254,733	$ 225,406
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	(135)	588	361	(5,023)
Reclassification of hedging loss included in net earnings	129	129	388	388
Other comprehensive income (loss), before tax	(6)	717	749	(4,635)
Net tax expense of other comprehensive income items	(48)	(48)	(144)	(144)
Other comprehensive income (loss), net of tax	(54)	669	605	(4,779)
Comprehensive income	$ 82,861	$ 73,227	$ 255,338	$ 220,627