<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED STATEMENT OF OPERATIONS, THE CONDENSED BALANCE SHEET AND THE
ACCOMPANYING NOTES TO THE CONDENSED FINANCIAL STATEMENTS, AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>
       
<S>                                     <C>                     <C>
<PERIOD-TYPE>                          12-MOS                  12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997<F1>         DEC-31-1996
<PERIOD-START>                             JAN-01-1997             JAN-01-1996
<PERIOD-END>                               DEC-31-1997             DEC-31-1996
<CASH>                                           4,511                   8,315
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   48,745                  21,405
<ALLOWANCES>                                         0                       0
<INVENTORY>                                     46,682                  31,475
<CURRENT-ASSETS>                               117,961                  69,308
<PP&E>                                          17,524                  10,678
<DEPRECIATION>                                       0                       0
<TOTAL-ASSETS>                                 167,449                 110,587
<CURRENT-LIABILITIES>                           67,308                  24,088
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                            29                      29
<OTHER-SE>                                     100,112                  86,470
<TOTAL-LIABILITY-AND-EQUITY>                   167,449                 110,587
<SALES>                                        203,247                 158,226
<TOTAL-REVENUES>                               203,247                 158,226
<CGS>                                          110,764                  88,195
<TOTAL-COSTS>                                  110,764                  88,195
<OTHER-EXPENSES>                                76,350                  56,487
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                               2,238                   4,625
<INCOME-PRETAX>                                 13,146                   9,275
<INCOME-TAX>                                     5,191                   3,611
<INCOME-CONTINUING>                              7,955                   5,664
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                   (863)
<CHANGES>                                            0                       0
<NET-INCOME>                                     7,955                   4,801
<EPS-PRIMARY>                                    $0.70                   $0.71
<EPS-DILUTED>                                    $0.69                   $0.52
<FN>
<F1>SEE NOTE 16 TO THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS.
</FN>
        


</TABLE>