Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 29, 2020	Mar. 02, 2019	Feb. 29, 2020	Mar. 02, 2019
Operating activities:
Net loss	$ (93)	$ (1,078)	$ (558)	$ (951)
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation and amortization	856	794	2,514	2,350
Inventory provisions	221	203	502	568
Loss on disposal of assets			1
Share-based compensation expense	157	176	527	571
Deferred income taxes	76	113	51	268
Change in assets and liabilities:
Accounts receivable	(760)	(478)	1,066	(576)
Inventories	(754)	(1,484)	(4,173)	(3,315)
Prepaid expenses and other assets	(56)	614	146	332
Accounts payable	(726)	(1,561)	(2,091)	(5,442)
Accrued liabilities	152	309	(238)	880
Other	2	(86)	(107)	88
Net cash used in operating activities	(925)	(2,478)	(2,360)	(5,227)
Investing activities:
Capital expenditures	(430)	(974)	(1,244)	(3,166)
Proceeds from maturity of investments		2,300	8,000	2,300
Purchases of investments		(12,500)	(13,000)	(17,800)
Net cash used in investing activities	(430)	(11,174)	(6,244)	(18,666)
Financing activities:
Proceeds from issuance of common stock		16	59	219
Cash dividends paid	(776)	(771)	(2,326)	(2,305)
Payment of financing lease principal	(46)		(121)
Net cash used in financing activities	(822)	(755)	(2,388)	(2,086)
Effect of exchange rate changes on cash and cash equivalents	(2)	417	(152)	(617)
Decrease in cash and cash equivalents	(2,179)	(13,990)	(11,144)	(26,596)
Cash and cash equivalents at beginning of period	33,054	47,859	42,019	60,465
Cash and cash equivalents at end of period	$ 30,875	$ 33,869	$ 30,875	$ 33,869