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Accumulated Other Comprehensive Income (Loss) - Reclassifications Out of Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 30, 2015 | Aug. 31, 2015 | Nov. 30, 2014 | Aug. 31, 2014 | Nov. 30, 2015 | Nov. 30, 2014
Equity [Abstract] |  |  |  |  |  |
Amortization of interest rate locks | $ (783) |  | $ (783) |  | $ (1,565) | $ (1,565)
Amortization of interest rate locks, net of tax | (488) |  | (488) |  | (976) | (976)
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Tax benefit | 295 |  | 295 |  | 589 | 589
Cumulative translation adjustment on investment in Shred-it, net of tax | (6,960) | $ (488) | (488) | $ (488) |  |
Accumulated Translation Adjustment on Investment Attributable to Parent |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Cumulative translation adjustment on investment in Shred-it | (10,381) |  | 0 |  | (10,381) | 0
Tax benefit | 3,909 |  | 0 |  | 3,909 | 0
Cumulative translation adjustment on investment in Shred-it, net of tax | $ (6,472) |  | $ 0 |  | $ (6,472) | $ 0

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- Definition Other Comprehensive Income (Loss), Amortization of Interest Rate Lock Agreements, before Tax + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount before tax of reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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- Definition Amount after tax of reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=51821188&loc=d3e1436-108581 + Details
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