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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Apr. 27, 2014
Apr. 28, 2013
Apr. 29, 2012
cash flows from operating activities:      
net income $ 17,447 $ 18,317 $ 13,296
adjustments to reconcile net income to net cash provided by operating activities:      
depreciation 5,312 5,115 4,865
amortization of other assets 169 235 243
stock-based compensation 710 562 349
excess tax benefit related to stock options exercised (143) (76) (64)
deferred income taxes (1,727) (344) (1,682)
gain on sale of equipment (283)   (168)
foreign currency exchange losses (gains) 626 222 (215)
changes in assets and liabilities, net of effects of acquisition of assets:      
accounts receivable (3,857) 1,667 (4,792)
inventories (2,200) (1,979) (7,497)
other current assets (270) (49) 395
other assets (72) (176) (61)
accounts payable-trade 4,131 (8,384) 5,426
accrued expenses and deferred compensation 34 2,531 1,710
accrued restructuring   (40) (4)
income taxes 342 (526) 202
net cash provided by operating activities 20,219 17,075 12,003
cash flows from investing activities:      
capital expenditures (5,258) (4,400) (5,890)
net cash paid for acquisition of assets (2,640)    
purchase of short-term investments (1,945) (105) (4,797)
proceeds from the sale of short-term investments 810 795 6,707
purchase of long-term investments (765)    
proceeds from life insurance policies   716  
payments on life insurance policies (30) (19)  
proceeds from the sale of buildings and equipment 407   299
net cash used in investing activities (9,421) (3,013) (3,681)
cash flows from financing activities:      
proceeds from lines of credit   1,000 6,323
payments on lines of credit   (1,325) (5,500)
payments on long-term debt (2,200) (2,515) (2,404)
debt issuance costs (83)   (37)
repurchases of common stock   (5,022) (5,384)
dividends paid (2,204) (7,593)  
proceeds from common stock issued 194 205 318
excess tax benefit related to stock options exercised 143 76 64
net cash used in financing activities (4,150) (15,174) (6,620)
effect of exchange rate changes on cash and cash equivalents (875) (381) 140
increase (decrease) in cash and cash equivalents 5,773 (1,493) 1,842
cash and cash equivalents at beginning of year 23,530 25,023 23,181
cash and cash equivalents at end of year $ 29,303 $ 23,530 $ 25,023