Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 31, 2013	Sep. 01, 2012
Operating activities:
Net income	$ 1,968	$ 647
Adjustments to reconcile net income to cash provided by (used in) operating activities:
Depreciation and amortization	248	299
Gain on sale of investments	7	20
Gain on disposal of assets	0	4
Share-based compensation expense	114	124
Change in assets and liabilities, net of effect of acquired businesses:
Deferred income taxes	(59)	(1)
Inventory Write-down	70	74
Accounts receivable	1,218	646
Income tax receivable	(2,751)	(155)
Inventories	520	624
Prepaid expenses and other assets	(156)	622
Accounts payable	(2,547)	(1,430)
Accrued liabilities	(1,890)	(1,006)
Long-term income tax liabilities	(242)	(321)
Other	9	(42)
Net cash used in operating activities	(1,185)	(3,333)
Investing activities:
Cash consideration paid for acquired businesses	973
Capital expenditures	441	79
Proceeds from sale of assets	0	4
Proceeds from maturity of investments	40,488	57,747
Purchases of investments	40,094	51,725
Proceeds from sales of available-for-sale securities	56	54
Purchases of available-for-sale securities	56	54
Other	(69)	(1)
Net cash provided by (used in) investing activities	(951)	5,948
Financing activities:
Repurchase of common stock	6,700	5,552
Proceeds from issuance of common stock	71	11
Cash dividends paid	857	0
Other	1	0
Net cash used in financing activities	(7,485)	(5,541)
Effect of exchange rate changes on cash and cash equivalents	149	271
Decrease in cash and cash equivalents	(9,472)	(2,655)
Cash and cash equivalents at beginning of period	102,002	43,893
Cash and cash equivalents at end of period	$ 92,530	$ 41,238