Significant Accounting Policies and Disclosures - Additional Information (Details)	12 Months Ended
	May 30, 2026 USD ($) Vote	May 31, 2025 USD ($)	Jun. 01, 2024 USD ($)	Oct. 07, 2025 shares
Significant Accounting Policies and Disclosures [Line Items]
Accounts receivable, net	$ 33,162,000	$ 24,117,000	$ 24,800,000
Allowance for credit losses	350,000	250,000
Foreign exchange (gain) loss	452,000	(496,000)	436,000
Finished goods	86,500,000	86,400,000
Raw material	11,800,000	11,500,000
Work in progress	4,700,000	4,900,000
Inventory valuation reserves	6,300,000	7,600,000
Inventory provisions	499,000	550,000	606,000
Construction in progress	$ 1,958,000	2,799,000
Lease initial term	12 months
Depreciation	$ 3,700,000	3,800,000	4,000,000
Impairment long-lived asset	0	0	0
Impairment associated with the Healthcare disposal		500,000
Other non-current liabilities	1,168,000	1,204,000
Net sales	228,564,000	208,909,000	196,460,000
Accounts payable	19,593,000	21,339,000
Share-based compensation expense	1,621,000	1,545,000	1,326,000
Tax benefit for share-based compensation expense	$ 400,000	400,000	300,000
Common stock shares, authorized | shares				25,000,000
Preferred stock authorized | shares				0
Limit of cash dividends Class B common stock (percent)	90.00%
Percentage tax benefit measured based on largest benefit	50.00%
Bill-and-Hold Arrangement
Significant Accounting Policies and Disclosures [Line Items]
Net sales	$ 2,600,000	4,000,000	2,100,000
ASU 2023-09
Significant Accounting Policies and Disclosures [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adoption Date	May 30, 2026
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
Manufacturing Facilities
Significant Accounting Policies and Disclosures [Line Items]
Construction in progress	$ 700,000
Other Facilities
Significant Accounting Policies and Disclosures [Line Items]
Construction in progress	900,000
IT systems
Significant Accounting Policies and Disclosures [Line Items]
Construction in progress	400,000
Customer | PMT
Significant Accounting Policies and Disclosures [Line Items]
Net sales	$ 31,500,000
Customer Concentration | Sales | Customer
Significant Accounting Policies and Disclosures [Line Items]
Percentage of products manufactured	14.00%
Supplier Concentration
Significant Accounting Policies and Disclosures [Line Items]
Accounts payable	$ 1,400,000	$ 3,700,000
Supplier Concentration | Cost of Sales | Customer
Significant Accounting Policies and Disclosures [Line Items]
Percentage of products manufactured	10.00%	10.00%
Location, Statement of Income, Balance [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense
Significant Accounting Policies and Disclosures [Line Items]
Amortization expense	$ 100,000	$ 200,000	$ 300,000
Common Stock
Significant Accounting Policies and Disclosures [Line Items]
Common stock shares, authorized | shares				22,000,000
Common Class B
Significant Accounting Policies and Disclosures [Line Items]
Common stock shares, authorized | shares				3,000,000
Number of votes per share | Vote	10
Maximum
Significant Accounting Policies and Disclosures [Line Items]
Percentage of services revenue	5.00%
Maximum | Customer Concentration | Sales | Customer
Significant Accounting Policies and Disclosures [Line Items]
Concentration risk threshold percentage		10.00%	10.00%
Maximum | Customer Concentration | Accounts Receivable | Customer
Significant Accounting Policies and Disclosures [Line Items]
Concentration risk threshold percentage	10.00%	10.00%