<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE
SHEET AS OF JUNE-30-1999 AND THE RELATED STATEMENTS OF OPERATIONS FOR THE THREE
AND SIX MONTH PERIODS THEN ENDED AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999             DEC-31-1999
<PERIOD-START>                             APR-01-1999             JAN-01-1999
<PERIOD-END>                               JUN-30-1999             JUN-30-1999
<CASH>                                           4,254                   4,254
<SECURITIES>                                       900                     900
<RECEIVABLES>                                    7,260                   7,260
<ALLOWANCES>                                         0                       0
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                                13,452                  13,452
<PP&E>                                          39,266                  39,266
<DEPRECIATION>                                  10,577                  10,577
<TOTAL-ASSETS>                                  42,908                  42,908
<CURRENT-LIABILITIES>                            7,877                   7,877
<BONDS>                                          4,273                   4,273
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                        40,205                  40,205
<OTHER-SE>                                     (9,448)                 (9,448)
<TOTAL-LIABILITY-AND-EQUITY>                    42,908                  42,908
<SALES>                                              0                       0
<TOTAL-REVENUES>                                17,469                  31,644
<CGS>                                                0                       0
<TOTAL-COSTS>                                   17,277                  30,766
<OTHER-EXPENSES>                                  (41)                   (115)
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                 118                     172
<INCOME-PRETAX>                                    115                     821
<INCOME-TAX>                                        10                      34
<INCOME-CONTINUING>                                105                     787
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                       105                     787
<EPS-BASIC>                                       0.01                    0.07
<EPS-DILUTED>                                     0.01                    0.07


</TABLE>