<ARTICLE>                     5

                                                                       
<PERIOD-TYPE>                     3-Mos            3-Mos           3-Mos           3-Mos
<FISCAL-YEAR-END>                 Dec-31-1998      Dec-31-1998     Dec-31-1998     Dec-31-1998
<PERIOD-START>                    Jan-01-1998      Apr-01-1998     Jul-01-1998     Oct-01-1998
<PERIOD-END>                      Mar-31-1998      Jun-30-1998     Sep-30-1998     Dec-31-1998
<CASH>                                    340            1,256           2,392           3,665
<SECURITIES>                                0                0               0               0
<RECEIVABLES>                          19,302           16,613          18,243          17,535
<ALLOWANCES>                              785              808             724             700
<INVENTORY>                               861            1,354           1,939           1,334
<CURRENT-ASSETS>                       21,177           20,355          23,476          23,917
<PP&E>                                 71,692           79,091          85,777          88,801
<DEPRECIATION>                          3,706            3,938           4,220           5,117
<TOTAL-ASSETS>                        127,734          133,700         172,994         176,201
<CURRENT-LIABILITIES>                  19,311           18,182          16,192          16,974
<BONDS>                                55,515           62,179          86,881          86,465
<PREFERRED-MANDATORY>                       0                0               0               0
<PREFERRED>                                 0                0               0               0
<COMMON>                               27,120           27,120          41,148          41,148
<OTHER-SE>                             16,751           19,512          21,468          23,514
<TOTAL-LIABILITY-AND-EQUITY>          124,734          133,700         172,994         176,201
<SALES>                                39,340           41,527          44,804          45,588
<TOTAL-REVENUES>                       39,340           41,527          44,804          45,588
<CGS>                                  24,653           28,523          27,588          27,073
<TOTAL-COSTS>                          34,799           36,604          39,408          40,383
<OTHER-EXPENSES>                            0                0               0               0
<LOSS-PROVISION>                            0                0               0               0
<INTEREST-EXPENSE>                        947            1,049           1,195           1,621
<INCOME-PRETAX>                         3,739            4,065           4,345           3,736
<INCOME-TAX>                            1,360            1,416           1,470           1,361
<INCOME-CONTINUING>                     2,379            2,649           2,875           2,375
<DISCONTINUED>                              0                0               0               0
<EXTRAORDINARY>                             0                0               0               0
<CHANGES>                                   0                0               0               0
<NET-INCOME>                            2,379            2,649           2,875           2,375
<EPS-BASIC>                              0.19             0.20            0.22            0.18
<EPS-DILUTED>                            0.18             0.20            0.21            0.17