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CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Jul. 29, 2012
Jul. 31, 2011
Cash flows from operating activities:    
Net income $ 3,524 $ 1,820
Adjustments to reconcile net income to net cash used in operating activities:    
Depreciation 1,254 1,187
Amortization of other assets 60 56
Stock-based compensation 70 77
Excess tax benefit related to stock-based compensation (55) (31)
Deferred income taxes 675 502
Foreign currency exchange gains (80) (39)
Changes in assets and liabilities:    
Accounts receivable 4,985 1,322
Inventories (7,710) (6,080)
Other current assets (572) (486)
Other assets (43) (14)
Accounts payable - trade (3,288) 54
Accrued expenses (930) (1,750)
Accrued restructuring   (3)
Income taxes 148 (257)
Net cash used in operating activities (1,962) (3,642)
Cash flows from investing activities:    
Capital expenditures (1,008) (1,304)
Purchase of short-term investments (25) (4,761)
Proceeds from the sale of short-term investments 795 2,032
Net cash used in investing activities (238) (4,033)
Cash flows from financing activities:    
Payments on long-term debt (50) (53)
Proceeds from common stock issued   169
Common stock repurchased (470) (1,102)
Dividends paid (381)  
Excess tax benefit related to stock-based compensation 55 31
Net cash used in financing activities (846) (955)
Effect of exchange rate changes on cash and cash equivalents (88) 19
Decrease in cash and cash equivalents (3,134) (8,611)
Cash and cash equivalents at beginning of period 25,023 [1] 23,181
Cash and cash equivalents at end of period $ 21,889 $ 14,570
[1] Derived from audited financial statements.