Note 13 - Long-term Debt (Details) - Long-term Debt (Parentheticals) - USD ($) $ in Thousands |
May. 31, 2015 |
May. 31, 2014 |
|---|---|---|
| Notes Payable, Other Payables [Member] | ||
| Note 13 - Long-term Debt (Details) - Long-term Debt (Parentheticals) [Line Items] | ||
| Debt discounts | $ 3,291 | $ 3,862 |
| Term Loan Facility [Member] | ||
| Note 13 - Long-term Debt (Details) - Long-term Debt (Parentheticals) [Line Items] | ||
| Debt discounts | $ 7,381 | $ 9,435 |