Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets, Net and Goodwill - Impairment (Details)

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Intangible Assets, Net and Goodwill - Impairment (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Feb. 29, 2016
Feb. 28, 2015
Feb. 29, 2016
Feb. 28, 2015
Finite-Lived Intangible Assets [Line Items]        
Impairment of goodwill $ 55,756 $ 0 $ 55,756 $ 0
Impairment of goodwill and intangible assets $ 145,112 0 145,112 0
Trade names and trademarks        
Finite-Lived Intangible Assets [Line Items]        
Impairment of intangible assets   0 46,940 0
Purchased technology        
Finite-Lived Intangible Assets [Line Items]        
Impairment of intangible assets   0 1,894 0
Customer relationships        
Finite-Lived Intangible Assets [Line Items]        
Impairment of intangible assets   $ 0 $ 40,522 $ 0