Discontinued Operations (Details) (USD $)	12 Months Ended			0 Months Ended
	May 31, 2012	May 31, 2011	May 31, 2010	May 26, 2010 Disposition of DolEx and Europhil Branded Money Transfer Businesses [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale price of disposed businesses				$ 85,000,000
Net proceeds from disposition of businesses, net				60,200,000
Cash remaining in divested business to fund associated settlement obligations				24,800,000
Transaction costs from disposition of businesses, included in loss on disposal			1,500,000
Income tax benefit resulting from loss on disposal			15,700,000
Settlement of working capital adjustments from disposition of business	0	2,577,000	(60,231,000)
Additional loss on disposal recognized		600,000
Total loss on disposal		$ 25,200,000