
<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>

FINANCIAL DATA SCHEDULE

This schedule contains summary financial information extracted from Form 10-Q
financial statements filed for the period ended September 30, 1996 and is
qualified in its entirety by reference to such financial statements.

</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-END>                               SEP-30-1996
<CASH>                                            7275
<SECURITIES>                                     31384
<RECEIVABLES>                                    36264
<ALLOWANCES>                                         0
<INVENTORY>                                       8661
<CURRENT-ASSETS>                                 91533
<PP&E>                                           59410
<DEPRECIATION>                                   43337
<TOTAL-ASSETS>                                  163013
<CURRENT-LIABILITIES>                            26063
<BONDS>                                             37
<COMMON>                                           693
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                                      133565
<TOTAL-LIABILITY-AND-EQUITY>                    160313
<SALES>                                              0
<TOTAL-REVENUES>                                116830
<CGS>                                                0
<TOTAL-COSTS>                                    81300
<OTHER-EXPENSES>                                 36437
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                   1727
<INCOME-TAX>                                      5066
<INCOME-CONTINUING>                             (3339)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    (3339)
<EPS-PRIMARY>                                    (.48)
<EPS-DILUTED>                                    (.48)
        


</TABLE>
