Supplemental Cash Flow Information (Tables)

6 Months Ended

Nov. 30, 2011

Supplemental Cash Flow Information [Abstract]

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

Supplemental cash flow disclosures are as follows:

	Six Months Ended November 30,
	2011		2010
	(in thousands)
Income taxes paid, net of refunds	$	26,325	$	14,489
Interest paid	6,739		9,082
Financing receivables:
Investment in equipment for financing leases	$	—	$	(54	)
Principal collections from customers – financing leases	1,203		1,045
Net decrease in financing receivables	$	1,203	$	991