Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2019	Sep. 01, 2018	Jun. 01, 2019
Income Tax Disclosure [Abstract]
Income tax provision	$ 177	$ 271
Effective income tax rate	53.00%	38.60%
U.S. statutory tax rate	21.00%
Deferred tax liability, undistributed foreign earnings	$ 200		$ 200
Liability for uncertain tax positions related to continuing operations, excluding interest and penalties	100
Liability for uncertain tax provisions	0		100
Deferred tax valuation allowance	$ 11,700		$ 11,700