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CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Oct. 28, 2018
Oct. 29, 2017
Oct. 28, 2018
Oct. 29, 2017
Apr. 29, 2018
Cash flows from operating activities:          
Net income $ 2,944 $ 3,976 $ 3,909 $ 8,959 $ 20,877
Adjustments to reconcile net income to net cash provided by operating activities:          
Depreciation     4,056 3,713  
Amortization     391 166  
Stock-based compensation     (106) 1,558  
Deferred income taxes     (2,081) 976  
Realized loss on sale of short-term investments (Available for Sale)     94    
Gain on sale of equipment     (1,079)    
Loss from investment in unconsolidated joint venture 55 75 132 193  
Foreign currency exchange (gain) loss     (102) 42  
Changes in assets and liabilities:          
Accounts receivable     1,639 561  
Inventories     3,767 1,597  
Other current assets     379 723  
Other assets     (10) (35)  
Accounts payable - trade     (3,264) (5,074)  
Deferred revenue     (160)    
Accrued expenses and deferred compensation     (1,472) (3,607)  
Accrued restructuring costs     260    
Income taxes     247 406  
Net cash provided by operating activities     6,600 10,178  
Cash flows from investing activities:          
Net cash paid for acquisition of businesses     (12,096)    
Capital expenditures     (2,096) (4,978)  
Proceeds from the sale of equipment     1,280 6  
Investment in unconsolidated joint venture     (100) (609)  
Proceeds from the sale of short-term investments (Held to Maturity)     4,000    
Proceeds from the sale of short-term investments (Available for Sale)     2,458    
Purchase of short-term investments (Available for Sale)     (10) (24)  
Proceeds from the sale of long-term investments (Rabbi Trust)       54  
Purchase of long-term investments (Rabbi Trust)     (526) (1,457)  
Net cash used in investing activities     (7,090) (7,008)  
Cash flows from financing activities:          
Proceeds from line of credit     12,000 10,000  
Payments on line of credit     (12,000) (10,000)  
Payments on vendor-financed capital expenditures     (1,412) (2,500)  
Dividends paid     (2,253) (4,603)  
Common stock surrendered for withholding taxes payable     (1,292) (1,147)  
Common stock repurchased     (844)    
Proceeds from common stock issued       5  
Net cash used in financing activities     (5,801) (8,245)  
Effect of exchange rate changes on cash and cash equivalents     (169) 19  
Decrease in cash and cash equivalents     (6,460) (5,056)  
Cash and cash equivalents at beginning of period     21,228 20,795 20,795
Cash and cash equivalents at end of period $ 14,768 $ 15,739 $ 14,768 $ 15,739 $ 21,228