<TABLE> <S> <C>

<PAGE>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FINANCIAL
STATEMENTS AND NOTES THERETO CONTAINED IN THE COMPANY'S ANNUAL REPORT ON FORM
10-K FILED ON MARCH 31, 1997 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>
<PERIOD-TYPE>                   YEAR                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1995
<PERIOD-START>                             JAN-01-1996             JAN-01-1995
<PERIOD-END>                               DEC-31-1996             DEC-31-1995
<CASH>                                           9,190                   1,375
<SECURITIES>                                    11,406                       0
<RECEIVABLES>                                    6,685                   4,122
<ALLOWANCES>                                         0                       0
<INVENTORY>                                      2,908                   2,609
<CURRENT-ASSETS>                                31,274                   8,502
<PP&E>                                          18,868                  16,771
<DEPRECIATION>                                  (8,260)                 (6,709)
<TOTAL-ASSETS>                                  42,658                  19,103
<CURRENT-LIABILITIES>                            4,898                   4,277
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                            92                      61
<OTHER-SE>                                      37,330                  12,412
<TOTAL-LIABILITY-AND-EQUITY>                    42,658                  19,103
<SALES>                                         47,282                  40,972
<TOTAL-REVENUES>                                48,267                  42,070
<CGS>                                           25,447                  23,059
<TOTAL-COSTS>                                    9,642                   9,840
<OTHER-EXPENSES>                                     0                       0
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                               (291)                     339
<INCOME-PRETAX>                                 13,469                   8,832
<INCOME-TAX>                                     2,359                     349
<INCOME-CONTINUING>                             11,110                   8,483
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    11,110                   8,483
<EPS-PRIMARY>                                     1.06                     .70
<EPS-DILUTED>                                     1.06                     .70



</TABLE>