<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<RESTATED>

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   9-MOS                   6-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-START>                             JAN-01-1997             JAN-01-1997             JAN-01-1997
<PERIOD-END>                               SEP-30-1997             JUN-30-1997             MAR-31-1997
<CASH>                                           4,338                   3,518                   5,804
<SECURITIES>                                    29,588                  29,242                  27,949
<RECEIVABLES>                                    2,540                   1,700                   2,070
<ALLOWANCES>                                     (183)                   (201)                   (209)
<INVENTORY>                                     39,011                  37,281                  37,265
<CURRENT-ASSETS>                                76,084                  72,552                  73,623
<PP&E>                                          38,085                  34,081                  32,129
<DEPRECIATION>                                 (9,350)                 (8,563)                 (7,863)
<TOTAL-ASSETS>                                 111,192                 104,528                 104,002
<CURRENT-LIABILITIES>                           10,057                   8,346                  12,339
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                        65,751                  65,505                  65,354
<OTHER-SE>                                      23,946<F1>              19,196<F1>              14,828<F1>
<TOTAL-LIABILITY-AND-EQUITY>                   111,192                 104,528                 104,002
<SALES>                                        163,544                 104,558                  50,744
<TOTAL-REVENUES>                               163,544                 104,558                  50,744
<CGS>                                          105,623                  67,829                  33,328
<TOTAL-COSTS>                                   36,800                  23,487                  11,331
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                               (513)                   (295)                   (151)
<INCOME-PRETAX>                                 21,634                  13,537                   6,236
<INCOME-TAX>                                     8,839                   5,492                   2,560
<INCOME-CONTINUING>                             12,795                   8,045                   3,676
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                    12,795                   8,045                   3,676
<EPS-PRIMARY>                                     0.70                    0.44                    0.20
<EPS-DILUTED>                                     0.68                    0.43                    0.20
<FN>
<F1>Retained Earnings
</FN>


</TABLE>