<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted for the three
months ended September 30, 2000 and is qualified in its entirety by reference to
such financial statements.
</LEGEND>
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> SEP-30-2000
<CASH> 103,264,000
<SECURITIES> 29,746,000
<RECEIVABLES> 34,149,000
<ALLOWANCES> 0
<INVENTORY> 17,709,000
<CURRENT-ASSETS> 191,837,000
<PP&E> 179,158,000
<DEPRECIATION> 77,665,000
<TOTAL-ASSETS> 333,498,000
<CURRENT-LIABILITIES> 22,386,000
<BONDS> 0
0
0
<COMMON> 299,000
<OTHER-SE> 307,464,000
<TOTAL-LIABILITY-AND-EQUITY> 333,498,000
<SALES> 51,075,000
<TOTAL-REVENUES> 51,075,000
<CGS> 24,810,000
<TOTAL-COSTS> 24,810,000
<OTHER-EXPENSES> 17,973,000
<LOSS-PROVISION> (15,000)
<INTEREST-EXPENSE> (2,756,000)
<INCOME-PRETAX> 11,063,000
<INCOME-TAX> 3,986,000
<INCOME-CONTINUING> 7,077,000
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 7,077,000
<EPS-BASIC> 0.24
<EPS-DILUTED> 0.23
</TABLE>