Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 25, 2017	Feb. 27, 2016	Feb. 25, 2017	Feb. 27, 2016
Operating activities:
Net loss	$ (1,431)	$ (2,926)	$ (6,803)	$ (6,611)
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation and amortization	703	583	2,020	1,865
(Gain) loss on sale of investments	(8)	21	(2)	2
Gain on disposal of assets				(244)
Share-based compensation expense	75	119	354	434
Deferred income taxes	121	(82)	(188)	173
Change in assets and liabilities, net of effect of acquired business:
Accounts receivable	(717)	282	3,217	311
Income tax receivable		187	(5)	851
Inventories	306	(2,164)	1,898	(5,636)
Prepaid expenses and other assets	80	1	(961)	(443)
Accounts payable	849	(986)	(2,372)	(2,976)
Accrued liabilities	(1,118)	(871)	(256)	(2,071)
Long-term liabilities-accrued pension				(465)
Other	(125)	125	(107)	256
Net cash used in operating activities	(1,265)	(5,711)	(3,205)	(14,554)
Investing activities:
Cash consideration paid for acquired business				(12,209)
Capital expenditures	(764)	(1,267)	(4,063)	(3,043)
Proceeds from sale of assets				402
Proceeds from maturity of investments			3,582	25,584
Purchases of investments			(2,136)	(2,151)
Proceeds from sales of available-for-sale securities	78	106	225	250
Purchases of available-for-sale securities	(78)	(106)	(225)	(250)
Other	(3)	(49)	(9)	(17)
Net cash (used in) provided by investing activities	(767)	(1,316)	(2,626)	8,566
Financing activities:
Repurchase of common stock				(5,015)
Proceeds from issuance of common stock	30	21	30	142
Cash dividends paid	(758)	(758)	(2,273)	(2,321)
Other				(4)
Net cash used in financing activities	(728)	(737)	(2,243)	(7,198)
Effect of exchange rate changes on cash and cash equivalents	35	106	(994)	(1,144)
Decrease in cash and cash equivalents	(2,725)	(7,658)	(9,068)	(14,330)
Cash and cash equivalents at beginning of period	54,111	67,863	60,454	74,535
Cash and cash equivalents at end of period	$ 51,386	$ 60,205	$ 51,386	$ 60,205