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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Apr. 27, 2013
Apr. 28, 2012
Apr. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:      
Net income $ 22,779 $ 8,489 $ 14,244
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation 15,379 17,273 19,354
Amortization 228 245 287
Amortization of premium/discount on marketable securities 190 183 48
Loss (gain) on sale of property and equipment 42 (16) (62)
Share-based compensation 3,037 3,262 3,370
Excess tax benefits from share-based compensation 0 (48) (121)
Equity in losses of affiliates 0 0 36
Provision for doubtful accounts 331 (150) (37)
Deferred income taxes, net (4,340) (68) 852
Change in operating assets and liabilities 13,103 (9,132) 3,375
Net cash provided by operating activities 50,749 20,038 41,346
CASH FLOWS FROM INVESTING ACTIVITIES:      
Purchases of property and equipment (9,674) (16,524) (9,386)
Proceeds from sales of property and equipment 198 231 238
Purchases of marketable securities (16,506) (18,870) (23,035)
Proceeds from sales or maturities of marketable securities 17,451 16,410 0
Insurance recoveries on property and equipment 0 0 187
Other investing activities, net 0 0 2,110
Net cash used in investing activities (8,531) (18,753) (29,886)
CASH FLOWS FROM FINANCING ACTIVITIES:      
Borrowings on notes payable 0 782 2,316
Payments on notes payable (1,459) (1,711) 0
Proceeds from exercise of stock options 1,316 547 1,352
Excess tax benefits from share-based compensation 0 48 121
Principal payments on long-term obligations 0 0 (26)
Dividends paid (30,859) (25,950) (24,795)
Net cash used in financing activities (31,002) (26,284) (21,032)
EFFECT OF EXCHANGE RATE CHANGES ON CASH (11) 114 277
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 11,205 (24,885) (9,295)
CASH AND CASH EQUIVALENTS:      
Beginning of period 29,423 54,308 63,603
End of period $ 40,628 $ 29,423 $ 54,308