Stockholders' Equity - Accumulated Other Comprehensive Income (Loss) (Details) $ in Thousands, shares in Millions		3 Months Ended
	Jun. 01, 2018 shares	Jul. 31, 2018 USD ($)
Stockholders’ Equity
Balance		$ 579,451
Foreign currency translation adjustments		(3,791)
Balance		619,280
Accumulated Other Comprehensive Income (Loss)
Stockholders’ Equity
Balance		441
Foreign currency translation adjustments		(3,791)
Other comprehensive loss on interest rate cap		(237)
Reclassification to earnings from acculumated other comprehensive income for interest rate cap		350
Balance		$ (3,237)
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