<TABLE> <S> <C>

<PAGE>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S FINANCIAL STATEMENTS INCLUDED IN THIS QUARTERLY REPORT ON FORM 10Q
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997
<PERIOD-START>                             APR-01-1997             JAN-01-1997
<PERIOD-END>                               JUN-30-1997             JUN-30-1997
<CASH>                                          29,267                  29,267
<SECURITIES>                                    26,139                  26,139
<RECEIVABLES>                                   11,119                  11,119
<ALLOWANCES>                                     2,145                   2,145
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                                66,106                  66,106
<PP&E>                                           5,970                   5,970
<DEPRECIATION>                                   2,705                   2,705
<TOTAL-ASSETS>                                  76,046                  76,046
<CURRENT-LIABILITIES>                           10,661                  10,661
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                           139                     139
<OTHER-SE>                                      65,246                  65,246
<TOTAL-LIABILITY-AND-EQUITY>                    76,046                  76,046
<SALES>                                          8,795                  15,095
<TOTAL-REVENUES>                                 8,795                  15,095
<CGS>                                                0                       0
<TOTAL-COSTS>                                    2,003                   4,005
<OTHER-EXPENSES>                                 1,795                   3,309
<LOSS-PROVISION>                                   693                     771
<INTEREST-EXPENSE>                                   0                       0
<INCOME-PRETAX>                                    955                   1,126
<INCOME-TAX>                                       334                     403
<INCOME-CONTINUING>                                621                     723
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                       621                     723
<EPS-PRIMARY>                                      .05                     .06
<EPS-DILUTED>                                      .05                     .06
        

</TABLE>