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Consolidated Statements Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
May 31, 2014 | May 31, 2013 | May 31, 2012
Statement of Comprehensive Income [Abstract] |  |  |
Net income (loss) | $ 3,088 | $ (612) | $ (5,094)
Other comprehensive (loss) income, before tax: |  |  |
Unrealized gain (loss) on marketable securities | (16) | 184 | (103)
Unrealized gain (loss) on interest rate swap | (32) | (522) | 327
Foreign currency translation gain (loss) | 295 | (47) | (142)
Other comprehensive income (loss), before tax | 247 | (385) | 82
Income tax benefit (expense) related to items of other comprehensive income | 18 | 125 | (83)
Other comprehensive income (loss), net of tax | 265 | (260) | (1)
Total comprehensive income (loss), net of tax | $ 3,353 | $ (872) | $ (5,095)

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