<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM BALANCE
SHEET AS OF DECEMBER 31, 1996 AND INCOME STATEMENT FOR THE YEAR ENDED DECEMBER
31, 1996 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FORM 10-K FILED
FOR THE YEAR ENDED DECEMBER 31, 1996.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               DEC-31-1996
<CASH>                                          20,935
<SECURITIES>                                    64,649
<RECEIVABLES>                                        0
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                86,749
<PP&E>                                          24,751
<DEPRECIATION>                                  12,266
<TOTAL-ASSETS>                                  99,809
<CURRENT-LIABILITIES>                           22,612
<BONDS>                                          6,133
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       127,334
<OTHER-SE>                                           0
<TOTAL-LIABILITY-AND-EQUITY>                    99,809
<SALES>                                              0
<TOTAL-REVENUES>                                22,505
<CGS>                                                0
<TOTAL-COSTS>                                   35,056
<OTHER-EXPENSES>                                 1,169
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,169
<INCOME-PRETAX>                                 (9,274)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                             (9,274)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    (9,274)
<EPS-PRIMARY>                                    (0.57)
<EPS-DILUTED>                                        0