
<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED FINANCIAL STATEMENTS FOUND IN THE COMPANY'S 10-Q FOR THE SIX MONTH
PERIOD ENDED JUNE 30, 1998, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C> 
<PERIOD-TYPE>                   6-MOS   
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                           4,381
<SECURITIES>                                         0
<RECEIVABLES>                                   71,177
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                79,745
<PP&E>                                          21,845
<DEPRECIATION>                                   7,897
<TOTAL-ASSETS>                                 166,908
<CURRENT-LIABILITIES>                           26,595
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           160
<OTHER-SE>                                      77,886
<TOTAL-LIABILITY-AND-EQUITY>                   166,908
<SALES>                                              0
<TOTAL-REVENUES>                               167,212
<CGS>                                                0
<TOTAL-COSTS>                                  111,570
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               2,525
<INCOME-PRETAX>                                  9,137
<INCOME-TAX>                                     3,718
<INCOME-CONTINUING>                              5,419
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     5,419
<EPS-PRIMARY>                                     0.34
<EPS-DILUTED>                                     0.34
        

</TABLE>
