<ARTICLE>                     5
<MULTIPLIER>                  1000
<RESTATED>
       
                             
<PERIOD-TYPE>                 6-MOS
<FISCAL-YEAR-END>                                                   DEC-31-1998 
<PERIOD-END>                                                        JUN-30-1998 
<CASH>                                                                   17,715 
<SECURITIES>                                                              2,830 
<RECEIVABLES>                                                            60,982 
<ALLOWANCES>                                                              2,921 
<INVENTORY>                                                                   0 
<CURRENT-ASSETS>                                                         85,304 
<PP&E>                                                                  155,089 
<DEPRECIATION>                                                          101,425 
<TOTAL-ASSETS>                                                          231,555 
<CURRENT-LIABILITIES>                                                   285,560 
<BONDS>                                                                       0 
<PREFERRED-MANDATORY>                                                         0 
<PREFERRED>                                                                   0 
<COMMON>                                                                  1,711 
<OTHER-SE>                                                             (178,445)
<TOTAL-LIABILITY-AND-EQUITY>                                            231,555 
<SALES>                                                                       0 
<TOTAL-REVENUES>                                                        193,995 
<CGS>                                                                         0 
<TOTAL-COSTS>                                                           149,665 
<OTHER-EXPENSES>                                                              0 
<LOSS-PROVISION>                                                              0 
<INTEREST-EXPENSE>                                                            0 
<INCOME-PRETAX>                                                          49,930 
<INCOME-TAX>                                                             20,921 
<INCOME-CONTINUING>                                                      29,009 
<DISCONTINUED>                                                                0 
<EXTRAORDINARY>                                                               0 
<CHANGES>                                                                     0 
<NET-INCOME>                                                             29,009 
<EPS-PRIMARY>                                                              0.53 
<EPS-DILUTED>                                                              0.49