<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> MAR-31-1998 <PERIOD-START> APR-01-1997 <PERIOD-END> SEP-30-1997 <CASH> 11,203,000 <SECURITIES> 0 <RECEIVABLES> 23,595,000 <ALLOWANCES> 1,301,000 <INVENTORY> 0 <CURRENT-ASSETS> 37,166,000 <PP&E> 29,551,000 <DEPRECIATION> 15,105,000 <TOTAL-ASSETS> 58,056,000 <CURRENT-LIABILITIES> 11,086,000 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 29,308,000 <OTHER-SE> 16,018,000 <TOTAL-LIABILITY-AND-EQUITY> 58,056,000 <SALES> 0 <TOTAL-REVENUES> 68,707,000 <CGS> 0 <TOTAL-COSTS> 61,197,000 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 7,510,000 <INCOME-TAX> 2,854,000 <INCOME-CONTINUING> 4,656,000 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 4,656,000 <EPS-PRIMARY> 1.07 <EPS-DILUTED> 1.07