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Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Dec. 01, 2012
Dec. 03, 2011
Dec. 01, 2012
Dec. 03, 2011
Operating activities:        
Net income $ 378 $ 830 $ 1,025 $ 4,461
Adjustments to reconcile net income to cash provided by (used in) operating activities:        
Depreciation and amortization 266 280 565 564
(Gain) loss on sale of investments (1) 11 (21) 1
(Gain) loss on disposal of assets 2   (2)  
Stock compensation expense 208 107 332 262
Change in assets and liabilities, net of effects of acquired businesses:        
Deferred income taxes (7) (3,514) (8) 1,815
Accounts receivable (758) 161 (1,404) (64)
Income tax receivable 36 2,686 191 (5,584)
Inventories 2,265 (1,978) 1,715 (5,592)
Prepaid expenses and other assets 196 5,631 (426) 8,426
Accounts payable 2,664 (503) 1,234 (3,084)
Accrued liabilities 806 (9,230) (200) (42,866)
Long-term income tax liabilities 4 4,396 (317) (7,015)
Other 148 1,744 190 1,678
Net cash provided by (used in) operating activities 6,207 621 2,874 (46,998)
Investing activities:        
Cash consideration paid for acquired businesses (2,557) (2,297) (2,557) (2,297)
Capital expenditures (478)   (557) (74)
Proceeds from sale of assets     4 16
Proceeds from maturity of investments 39,763 64,849 97,510 202,382
Purchases of investments (23,838) (68,878) (75,562) (285,162)
Proceeds from sales of available-for-sale securities 83 58 137 121
Purchases of available-for-sale securities (83) (58) (137) (121)
Other   3   51
Net cash provided by (used in) investing activities 12,890 (6,323) 18,838 (85,084)
Financing activities:        
Repurchase of common stock (5,998) (4,197) (11,550) (11,888)
Proceeds from issuance of common stock 72 275 83 362
Cash dividends paid (1,799) (832) (1,799) (1,678)
Other   (4)   3
Net cash used in financing activities (7,725) (4,758) (13,266) (13,201)
Effect of exchange rate changes on cash and cash equivalents 908 (1,594) 1,179 (510)
Increase/ (decrease) in cash and cash equivalents 12,280 (12,054) 9,625 (145,793)
Cash and cash equivalents at beginning of period 41,238 37,236 43,893 170,975
Cash and cash equivalents at end of period $ 53,518 $ 25,182 $ 53,518 $ 25,182