Note 10 - Long-term Debt (Details) - Long-term Debt (Parentheticals) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2015	May 31, 2014
Term Loan Facility [Member]
Note 10 - Long-term Debt (Details) - Long-term Debt (Parentheticals) [Line Items]
Debt discounts	$ 7,901	$ 9,435
Notes Payable, Other Payables [Member]
Note 10 - Long-term Debt (Details) - Long-term Debt (Parentheticals) [Line Items]
Debt discounts	$ 3,444	$ 3,862

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant