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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Apr. 26, 2014
Apr. 27, 2013
Apr. 28, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:      
Net income $ 22,206 $ 22,779 $ 8,489
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation 14,137 15,379 17,273
Amortization 364 228 245
Amortization of premium/discount on marketable securities 221 190 183
(Gain) Loss on sale of property and equipment (72) 42 (16)
Share-based compensation 2,897 3,037 3,262
Excess tax benefits from share-based compensation (119) 0 (48)
Provision for doubtful accounts (190) 331 (150)
Deferred income taxes, net 1,543 (4,340) (68)
Change in operating assets and liabilities (4,788) 13,103 (9,132)
Net cash provided by operating activities 36,199 50,749 20,038
CASH FLOWS FROM INVESTING ACTIVITIES:      
Purchases of property and equipment (13,519) (9,674) (16,524)
Proceeds from sales of property and equipment 238 198 231
Purchases of marketable securities (15,550) (16,506) (18,870)
Proceeds from sales or maturities of marketable securities 13,953 17,451 16,410
Acquisition, net of cash acquired (1,480) 0 0
Net cash used in investing activities (16,358) (8,531) (18,753)
CASH FLOWS FROM FINANCING ACTIVITIES:      
Borrowings on notes payable 0 0 782
Payments on notes payable 0 (1,459) (1,711)
Proceeds from exercise of stock options 4,954 1,316 547
Excess tax benefits from share-based compensation 119 0 48
Principal payments on long-term obligations (3,704) 0 0
Dividends paid (16,690) (30,859) (25,950)
Net cash used in financing activities (15,321) (31,002) (26,284)
EFFECT OF EXCHANGE RATE CHANGES ON CASH (94) (11) 114
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 4,426 11,205 (24,885)
CASH AND CASH EQUIVALENTS:      
Beginning of period 40,628 29,423 54,308
End of period $ 45,054 $ 40,628 $ 29,423