<ARTICLE> 5
<MULTIPLIER> 1,000
       
                                                                                       
<PERIOD-TYPE>                   9-MOS                 6-MOS                 3-MOS                 12-MOS
<FISCAL-YEAR-END>                       DEC-28-1997           DEC-28-1997           DEC-28-1997            DEC-29-1996
<PERIOD-START>                          DEC-30-1996           DEC-30-1996           DEC-30-1996            JAN-01-1996      
<PERIOD-END>                            SEP-28-1997           JUN-29-1997           MAR-30-1997            DEC-29-1996    
<CASH>                                       19,663                 9,424                16,066                 24,063
<SECURITIES>                                 57,247                59,454                63,197                 65,067
<RECEIVABLES>                                13,547                13,613                13,475                 13,101
<ALLOWANCES>                                      0                     0                     0                      0
<INVENTORY>                                   8,524                 8,862                 8,067                  6,839
<CURRENT-ASSETS>                             47,181                37,610                42,537                 48,248
<PP&E>                                      133,727               124,477               112,165                101,513
<DEPRECIATION>                               29,328                26,020                23,274                 20,796
<TOTAL-ASSETS>                              241,289               226,584               218,928                212,061
<CURRENT-LIABILITIES>                        28,025                23,436                24,646                 23,014
<BONDS>                                       1,320                 1,320                 1,320                  1,505
<PREFERRED-MANDATORY>                             0                     0                     0                      0
<PREFERRED>                                       0                     0                     0                      0
<COMMON>                                        290                   290                   288                    288
<OTHER-SE>                                  202,956               194,350               185,851                180,355
<TOTAL-LIABILITY-AND-EQUITY>                241,289               226,584               218,928                212,061
<SALES>                                     343,059               221,927               103,072                337,939
<TOTAL-REVENUES>                            364,107               235,855               109,643                360,052
<CGS>                                       174,070               112,902                52,567                181,863
<TOTAL-COSTS>                               295,748               191,651                88,765                294,071
<OTHER-EXPENSES>                             41,080                26,622                12,496                 40,352
<LOSS-PROVISION>                                  0                     0                     0                      0
<INTEREST-EXPENSE>                                0                     0                     0                      0
<INCOME-PRETAX>                              29,870                18,990                 9,036                 29,546
<INCOME-TAX>                                 11,052                 7,026                 3,343                 10,932
<INCOME-CONTINUING>                          18,818                11,964                 5,693                 18,614
<DISCONTINUED>                                    0                     0                     0                      0 
<EXTRAORDINARY>                                   0                     0                     0                      0
<CHANGES>                                         0                     0                     0                      0
<NET-INCOME>                                 18,818                11,964                 5,693                 18,614
<EPS-PRIMARY>                                  0.65                  0.42                  0.20                   0.66
<EPS-DILUTED>                                  0.63                  0.40                  0.19                   0.65