Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 27, 2016	Feb. 28, 2015	Feb. 27, 2016	Feb. 28, 2015
Operating activities:
Net loss	$ (2,926)	$ (2,198)	$ (6,611)	$ (3,338)
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation and amortization	583	418	1,865	1,227
(Loss) gain on sale of investments	21	(6)	2	(15)
Gain on disposal of assets		(4)	(244)	(30)
Share-based compensation expense	119	143	434	529
Deferred income taxes	(82)	(498)	173	(665)
Change in assets and liabilities, net of effect of acquired business:
Accounts receivable	282	(2,361)	311	(2,655)
Income tax receivable	187		851	2,888
Inventories, net	(2,164)	(105)	(5,636)	(4,366)
Prepaid expenses and other assets	1	176	(443)	(727)
Accounts payable	(986)	(1,878)	(2,976)	(389)
Accrued liabilities	(871)	632	(2,071)	(469)
Long term liablities - accrued pension			(465)
Other	125	(25)	256	(32)
Net cash used in operating activities	(5,711)	(5,706)	(14,554)	(8,042)
Investing activities:
Cash consideration paid for acquired business			(12,209)
Capital expenditures	(1,267)	(1,314)	(3,043)	(3,250)
Proceeds from sales of assets			402
Proceeds from maturity of investments		750	25,584	31,957
Purchases of investments		(750)	(2,151)	(34,093)
Proceeds from sales of available-for-sale securities	106	112	250	186
Purchases of available-for-sale securities	(106)	(112)	(250)	(186)
Other	(49)	(98)	(17)	(128)
Net cash provided by (used in) investing activities	(1,316)	(1,412)	8,566	(5,514)
Financing activities:
Repurchase of common stock		(1,305)	(5,015)	(3,945)
Proceeds from issuance of common stock	21	13	142	301
Cash dividends paid	(758)	(808)	(2,321)	$ (2,453)
Other		2	(4)
Net cash used in financing activities	(737)	(2,098)	(7,198)	$ (6,097)
Effect of exchange rate changes on cash and cash equivalents	106	(2,272)	(1,144)	(4,701)
Decrease in cash and cash equivalents	(7,658)	(11,488)	(14,330)	(24,354)
Cash and cash equivalents at beginning of period	67,863	89,886	74,535	102,752
Cash and cash equivalents at end of period	$ 60,205	$ 78,398	$ 60,205	$ 78,398