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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Aug. 30, 2015
Aug. 31, 2014
Cash flows from operating activities:    
Consolidated net income $ 2,988 $ 2,424
Adjustments to reconcile net income to net cash (used in) provided by operating activities:    
Depreciation and amortization 2,211 1,513
Stock-based compensation expense 797 398
Deferred taxes 509 429
Change in investment in non-public company, fair value (800) $ (200)
Tax benefit from stock based compensation (74)
Net gain on disposal of property and equipment (3)
Changes in current assets and current liabilities:    
Accounts receivable, net 1,959 $ 929
Income taxes receivable 92 936
Inventories, net (3,396) (3,099)
Prepaid expenses and other current assets 178 (2,823)
Accounts payable (3,063) $ 5,264
Income taxes payable (1,125)
Accrued compensation (2,829) $ (549)
Other accrued liabilities 706 (1,084)
Deferred revenue 11 (195)
Net cash (used in) provided by operating activities (1,839) 3,943
Cash flows from investing activities:    
Purchases of property and equipment $ (3,487) (4,098)
Investment in non-public company, fair value $ (11,000)
Proceeds from sale of fixed assets $ 91
Net cash used in investing activities (3,396) $ (15,098)
Cash flows from financing activities:    
Proceeds from sale of common stock $ 41 3
Taxes paid by Company for stock swaps and RSUs $ (12)
Tax benefit from stock based compensation $ 74
Proceeds from long-term debt $ 7,070
Payments on long-term debt $ (1,916) (1,411)
Proceeds from lines of credit 11,117
Payments on lines of credit (11,117)
Change in other assets $ 12 (209)
Net cash (used in) provided by financing activities (1,789) 5,441
Net decrease in cash and cash equivalents (7,024) (5,714)
Cash and cash equivalents at beginning of period 14,127 14,243
Cash and cash equivalents at end of period $ 7,103 $ 8,529