<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from Company's
form 10-Q for the 9 months ended September 30, 1998 filed November 13, 1998 with
Securities and Exchange Commission and is qualified in its entirety by reference
to such 10Q.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               SEP-30-1998
<CASH>                                          29,785
<SECURITIES>                                    12,152
<RECEIVABLES>                                    3,856
<ALLOWANCES>                                      (68)
<INVENTORY>                                          0
<CURRENT-ASSETS>                                46,835
<PP&E>                                          17,663
<DEPRECIATION>                                (14,085)
<TOTAL-ASSETS>                                  57,153
<CURRENT-LIABILITIES>                            6,702
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           106
<OTHER-SE>                                      50,075
<TOTAL-LIABILITY-AND-EQUITY>                    57,153
<SALES>                                              0
<TOTAL-REVENUES>                                20,751
<CGS>                                                0
<TOTAL-COSTS>                                    7,091
<OTHER-EXPENSES>                                 1,967
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 122
<INCOME-PRETAX>                                  1,883
<INCOME-TAX>                                        58
<INCOME-CONTINUING>                              1,825
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,825
<EPS-PRIMARY>                                     0.17
<EPS-DILUTED>                                     0.16