Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2019	Dec. 01, 2018	Nov. 30, 2019	Dec. 01, 2018	Jun. 01, 2019
Income Tax Disclosure [Abstract]
Income tax provision	$ 80	$ 178	$ 257	$ 449
Effective income tax rate			(123.60%)	77.90%
U.S. statutory tax rate			21.00%
Deferred tax liability, undistributed foreign earnings	200		$ 200		$ 200
Liability for uncertain tax positions related to continuing operations, excluding interest and penalties	100		100
Liability for uncertain tax provisions	0		0		100
Deferred tax valuation allowance	$ 11,900		$ 11,900		$ 11,700