Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 30, 2013	Dec. 01, 2012	Nov. 30, 2013	Dec. 01, 2012
Operating activities:
Net income	$ 524	$ 378	$ 2,492	$ 1,025
Adjustments to reconcile net income to cash provided by (used in) operating activities:
Depreciation and amortization	273	266	521	565
Gain on sale of investments	(12)	(1)	(19)	(21)
(Gain) loss on disposal of assets	0	2	0	(2)
Share-based compensation expense	270	208	384	332
Deferred income taxes	(108)	(7)	(167)	(8)
Change in assets and liabilities, net of effect of acquired businesses:
Accounts receivable	(508)	(758)	(1,726)	(1,404)
Income tax receivable	357	36	3,108	191
Inventories	310	2,265	(140)	1,715
Prepaid expenses and other assets	(430)	196	(274)	(426)
Accounts payable	317	2,664	(2,230)	1,234
Accrued liabilities	(565)	806	(2,455)	(200)
Long-term income tax liabilities	(235)	4	(477)	(317)
Other	56	148	47	190
Net cash provided by (used in) operating activities	249	6,207	(936)	2,874
Investing activities:
Cash consideration paid for acquired businesses	0	(2,557)	(973)	(2,557)
Capital expenditures	(540)	(478)	(981)	(557)
Proceeds from sale of assets	0	0	0	4
Proceeds from maturity of investments	14,044	39,763	54,532	97,510
Purchases of investments	(11,458)	(23,838)	(51,552)	(75,562)
Proceeds from sales of available-for-sale securities	20	83	76	137
Purchases of available-for-sale securities	(20)	(83)	(76)	(137)
Other	22	0	91	0
Net cash provided by investing activities	2,068	12,890	1,117	18,838
Financing activities:
Repurchase of common stock	(2,025)	(5,998)	(8,725)	(11,550)
Proceeds from issuance of common stock	100	72	171	83
Cash dividends paid	(828)	(1,799)	(1,685)	(1,799)
Other	0	0	1	0
Net cash used in financing activities	(2,753)	(7,725)	(10,238)	(13,266)
Effect of exchange rate changes on cash and cash equivalents	552	908	701	1,179
Increase/ (decrease) in cash and cash equivalents	116	12,280	(9,356)	9,625
Cash and cash equivalents at beginning of period	92,530	41,238	102,002	43,893
Cash and cash equivalents at end of period	$ 92,646	$ 53,518	$ 92,646	$ 53,518