<ARTICLE> 5
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               SEP-30-2000
<CASH>                                           8,350
<SECURITIES>                                     6,724
<RECEIVABLES>                                   50,143
<ALLOWANCES>                                     4,982
<INVENTORY>                                     21,698
<CURRENT-ASSETS>                                97,853
<PP&E>                                         255,431
<DEPRECIATION>                               (164,878)
<TOTAL-ASSETS>                                 215,159
<CURRENT-LIABILITIES>                           47,124
<BONDS>                                            484
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         2,826
<OTHER-SE>                                     162,269
<TOTAL-LIABILITY-AND-EQUITY>                   215,159
<SALES>                                              0
<TOTAL-REVENUES>                                86,196
<CGS>                                           30,604
<TOTAL-COSTS>                                   68,567
<OTHER-EXPENSES>                                 4,953
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 13,092
<INCOME-TAX>                                     4,975
<INCOME-CONTINUING>                              8,117
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     8,117
<EPS-BASIC>                                        .29
<EPS-DILUTED>                                      .29