Stockholders' Equity - Accumulated Other Comprehensive Income (Loss) (Details) $ in Thousands, shares in Millions		3 Months Ended	6 Months Ended
	Jun. 01, 2018 shares	Oct. 31, 2018 USD ($)	Oct. 31, 2018 USD ($)
Stockholders’ Equity
Balance			$ 579,451
Foreign currency translation adjustments		$ (4,902)	(8,693)
Balance		641,258	641,258
Accumulated Other Comprehensive Income (Loss)
Stockholders’ Equity
Balance			441
Foreign currency translation adjustments			(8,693)
Other comprehensive loss on interest rate cap			(237)
Reclassification to earnings from accumulated other comprehensive income for interest rate cap			727
Balance		$ (7,762)	$ (7,762)
Titan
Stockholders’ Equity
Issuance preferred stock to current shareholders of Titan (in shares) | shares	1.1
Exchangeable shares conversion ratio	1
Threshold period to hold converted shares from acquisition date	1 year