Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended
	Aug. 29, 2020	Aug. 31, 2019	May 30, 2020
Operating Loss Carryforwards [Line Items]
Income tax provision	$ 124,000	$ 177,000
Effective income tax rate	(12.10%)	53.00%
U.S. statutory tax rate	21.00%
Liability for uncertain tax positions related to continuing operations, excluding interest and penalties	$ 100,000		$ 100,000
Deferred tax valuation allowance	12,700,000		12,300,000
Maximum
Operating Loss Carryforwards [Line Items]
Deferred tax liability, undistributed earnings of foreign subsidiaries	$ 100,000		$ 100,000