<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS RESTATED SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
RESPECTIVE CONSOLIDATED FINANCIAL STATEMENTS OF THE COMPANY FOR THE FISCAL
QUARTERS ENDED MARCH 31, 1996, JUNE 30, 1996 AND SEPTEMBER 30, 1996 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERNCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1996             DEC-31-1996
<PERIOD-START>                             JAN-01-1996             JAN-01-1996             JAN-01-1996
<PERIOD-END>                               MAR-31-1996             JUN-30-1996             SEP-30-1996
<CASH>                                          12,706                  12,172                  15,279
<SECURITIES>                                    72,742                  80,543                  78,332
<RECEIVABLES>                                   18,384                  22,158                  20,066
<ALLOWANCES>                                         0                       0                       0
<INVENTORY>                                     26,968                  19,936                  20,784
<CURRENT-ASSETS>                               131,535                 135,683                 135,267
<PP&E>                                         143,655                 144,521                 143,319
<DEPRECIATION>                                       0                       0                       0
<TOTAL-ASSETS>                                 357,582                 308,731                 305,624
<CURRENT-LIABILITIES>                           59,983                  68,347                  62,709
<BONDS>                                         27,569                  27,613                  32,402
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                        69,978                  69,978                  87,672
<OTHER-SE>                                     157,088                 104,032                 106,898
<TOTAL-LIABILITY-AND-EQUITY>                   357,582                 308,731                 305,624
<SALES>                                         48,085                  92,313                 136,488
<TOTAL-REVENUES>                                49,873                  99,550                 146,466
<CGS>                                           36,615                  75,994                 112,298
<TOTAL-COSTS>                                   43,943                  90,736                 134,483
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                               1,059                   1,954                   2,899
<INCOME-PRETAX>                                  5,930                   8,814                  11,983
<INCOME-TAX>                                        70                      81                     110
<INCOME-CONTINUING>                              5,860                   8,733                  11,873
<DISCONTINUED>                                      30                     466                     466
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     5,890                   9,199                  12,339
<EPS-PRIMARY>                                     0.44                    0.69                    0.91
<EPS-DILUTED>                                     0.44                    0.68                    0.90
        

</TABLE>