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CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Aug. 03, 2014
Jul. 28, 2013
Cash flows from operating activities:    
Net income $ 3,344 $ 3,230
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation 1,399 1,305
Amortization of other assets 47 39
Stock-based compensation 46 152
Excess tax benefit related to stock-based compensation (99) (114)
Deferred income taxes 1,193 1,438
Gain on sale of equipment (45) (74)
Foreign currency exchange (gains) losses (201) 96
Changes in assets and liabilities, net of effects of acquisition of assets:    
Accounts receivable 3,168 (1,049)
Inventories (1,021) (3,271)
Other current assets 40 (1,300)
Other assets 283 (11)
Accounts payable - trade (2,224) 5,284
Accrued expenses and deferred compensation (1,855) (3,131)
Income taxes (24) 81
Net cash provided by operating activities 4,051 2,675
Cash flows from investing activities:    
Capital expenditures (2,333) (884)
Proceeds from the sale of equipment 391 104
Cash paid for business acquisition   (2,640)
Purchase of short-term investments (27) (1,023)
Purchase of long-term investments (984)  
Net cash used in investing activities (2,953) (4,443)
Cash flows from financing activities:    
Excess tax benefit related to stock-based compensation 99 114
Common stock repurchased (556)  
Dividends paid (5,502) (489)
Proceeds from common stock issued   145
Net cash used in financing activities (5,959) (230)
Effect of exchange rate changes on cash and cash equivalents 223 (109)
Decrease in cash and cash equivalents (4,638) (2,107)
Cash and cash equivalents at beginning of period 29,303 [1] 23,530
Cash and cash equivalents at end of period $ 24,665 $ 21,423
[1] Derived from audited financial statements.