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Note 7 - Deferred Financing Costs (Detail) - Changes in Deferred Financing Costs (USD $)
3 Months Ended
Aug. 31, 2012
Balance at beginning of period $ 38,769,000
Debt issuance costs (See Note 8) 2,528,000
Loss on extinguishment of debt (6,686,000)
Amortization (1,223,000)
Balance at end of period 36,121,000
Deferred Financing Costs [Member]
 
Loss on extinguishment of debt $ (3,953,000)