
<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE JULY 30,
1999 CONSOLIDATED BALANCE SHEET AND CONSOLIDATED STATEMENT OF OPERATIONS FOR
THE THREE-MONTH PERIOD ENDED JULY 31, 1999, AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINACIAL STATEMENTS AND THE FOOTNOTES THERETO.
</LEGEND>
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               JUL-31-1999
<CASH>                                           4,918
<SECURITIES>                                         0
<RECEIVABLES>                                   33,470
<ALLOWANCES>                                     1,977
<INVENTORY>                                        646
<CURRENT-ASSETS>                                39,698
<PP&E>                                         213,770
<DEPRECIATION>                                  73,190
<TOTAL-ASSETS>                                 300,639
<CURRENT-LIABILITIES>                           30,202
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           160
<OTHER-SE>                                     151,507
<TOTAL-LIABILITY-AND-EQUITY>                   300,639
<SALES>                                              0
<TOTAL-REVENUES>                                55,036
<CGS>                                                0
<TOTAL-COSTS>                                   30,946
<OTHER-EXPENSES>                                16,910
<LOSS-PROVISION>                                 1,977
<INTEREST-EXPENSE>                               1,605
<INCOME-PRETAX>                                  5,632
<INCOME-TAX>                                     2,591
<INCOME-CONTINUING>                              3,041
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     3,041
<EPS-BASIC>                                       0.19
<EPS-DILUTED>                                     0.18


</TABLE>
