<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from SEC Form
10-K for the Year Ended December 31, 1996 and is qualified in its entirety by
reference to such financial statements
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<CASH>                                          34,830
<SECURITIES>                                    49,349
<RECEIVABLES>                                    3,087
<ALLOWANCES>                                         0
<INVENTORY>                                         80
<CURRENT-ASSETS>                                85,445
<PP&E>                                          22,674
<DEPRECIATION>                                  10,994
<TOTAL-ASSETS>                                 102,140
<CURRENT-LIABILITIES>                           13,765
<BONDS>                                         53,914
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            32
<OTHER-SE>                                      37,293
<TOTAL-LIABILITY-AND-EQUITY>                   102,140
<SALES>                                            207
<TOTAL-REVENUES>                                36,842
<CGS>                                              174
<TOTAL-COSTS>                                   38,077
<OTHER-EXPENSES>                                21,417
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               8,160
<INCOME-PRETAX>                               (37,313)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                           (37,313)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (37,313)
<EPS-PRIMARY>                                   (1.30)
<EPS-DILUTED>                                   (1.30)