
<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, 1998 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-31-1998
<PERIOD-END>                      SEP-30-1998
<CASH>                                   1366
<SECURITIES>                            63431
<RECEIVABLES>                           35633
<ALLOWANCES>                                0
<INVENTORY>                              1925
<CURRENT-ASSETS>                       112946
<PP&E>                                  39081
<DEPRECIATION>                         (27671)
<TOTAL-ASSETS>                         201501
<CURRENT-LIABILITIES>                   23141
<BONDS>                                     0
<COMMON>                                  719
<PREFERRED-MANDATORY>                       0
<PREFERRED>                                 0
<OTHER-SE>                             175605
<TOTAL-LIABILITY-AND-EQUITY>           201501
<SALES>                                     0
<TOTAL-REVENUES>                        93335
<CGS>                                       0
<TOTAL-COSTS>                           65772
<OTHER-EXPENSES>                        18017
<LOSS-PROVISION>                            0
<INTEREST-EXPENSE>                          0
<INCOME-PRETAX>                         15417
<INCOME-TAX>                             6153
<INCOME-CONTINUING>                      9264
<DISCONTINUED>                           1024 
<EXTRAORDINARY>                             0
<CHANGES>                                   0
<NET-INCOME>                            10288
<EPS-PRIMARY>                             .73
<EPS-DILUTED>                             .72
 

</TABLE>
