Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Operating activities:
Net income (loss)	$ 689	$ (622)	$ (458)	$ (465)
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities:
Depreciation and amortization	873	825	1,746	1,658
Inventory provisions	215	120	452	281
Loss on disposal of assets				1
Share-based compensation expense	178	182	379	370
Deferred income taxes	(55)	23	(53)	(25)
Change in assets and liabilities:
Accounts receivable	687	(335)	(167)	1,826
Inventories	613	(2,062)	(1,008)	(3,419)
Prepaid expenses and other assets	(381)	(423)	(272)	202
Accounts payable	211	2,590	(2,523)	(1,365)
Accrued liabilities	1,633	486	3,412	(390)
Other	(236)	(165)	(438)	(109)
Net cash provided by (used in) operating activities	4,427	619	1,070	(1,435)
Investing activities:
Capital expenditures	(562)	(475)	(1,280)	(814)
Proceeds from maturity of investments			16,000	8,000
Purchases of investments		(13,000)	(9,000)	(13,000)
Net cash (used in) provided by investing activities	(562)	(13,475)	5,720	(5,814)
Financing activities:
Proceeds from issuance of common stock		59		59
Cash dividends paid	(780)	(775)	(1,560)	(1,550)
Payment of financing lease principal	(46)	(45)	(91)	(75)
Other		(4)
Net cash used in financing activities	(826)	(765)	(1,651)	(1,566)
Effect of exchange rate changes on cash and cash equivalents	489	218	1,349	(150)
Increase (decrease) in cash and cash equivalents	3,528	(13,403)	6,488	(8,965)
Cash and cash equivalents at beginning of period	33,495	46,457	30,535	42,019
Cash and cash equivalents at end of period	$ 37,023	$ 33,054	$ 37,023	$ 33,054