
<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AND INTERIM UNAUDITED CONSOLIDATED STATEMENTS OF
EARNINGS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JUN-30-1998
<PERIOD-START>                             JUL-01-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                          65,555
<SECURITIES>                                         0
<RECEIVABLES>                                    8,683
<ALLOWANCES>                                       911
<INVENTORY>                                      1,889
<CURRENT-ASSETS>                                75,745
<PP&E>                                          43,278
<DEPRECIATION>                                  18,417
<TOTAL-ASSETS>                                 135,516
<CURRENT-LIABILITIES>                           70,612
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            98
<OTHER-SE>                                      32,894
<TOTAL-LIABILITY-AND-EQUITY>                   135,516
<SALES>                                         44,819
<TOTAL-REVENUES>                                44,819
<CGS>                                                0
<TOTAL-COSTS>                                   41,214
<OTHER-EXPENSES>                                    50
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,165
<INCOME-PRETAX>                                  2,390
<INCOME-TAX>                                       956
<INCOME-CONTINUING>                              1,434
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,434
<EPS-PRIMARY>                                      .15
<EPS-DILUTED>                                      .14
        

</TABLE>
