Share Based Payments (Tables)

3 Months Ended

Jul. 31, 2011

Share Based Payments (Tables) [Abstract]

Share based payments

	Three Months Ended
	July 31,
	2011		2010
Share-based compensation expense included in selling, distribution, and administrative expenses	$	5,151	$	4,340
Share-based compensation expense included in other merger and integration costs		881		988
Share-based compensation expense included in other restructuring costs		43		64
Total share-based compensation expense	$	6,075	$	5,392
Related income tax benefit	$	2,014	$	1,688