<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> JUN-30-2000
<CASH> 233,000
<SECURITIES> 0
<RECEIVABLES> 18,889,000
<ALLOWANCES> 1,140,000
<INVENTORY> 1,022,000
<CURRENT-ASSETS> 22,536,000
<PP&E> 44,793,000
<DEPRECIATION> 19,084,000
<TOTAL-ASSETS> 74,771,000
<CURRENT-LIABILITIES> 24,602,000
<BONDS> 0
0
0
<COMMON> 18,130,000
<OTHER-SE> 0
<TOTAL-LIABILITY-AND-EQUITY> 74,771,000
<SALES> 37,612,000
<TOTAL-REVENUES> 37,612,000
<CGS> 21,632,000
<TOTAL-COSTS> 21,632,000
<OTHER-EXPENSES> 10,729,000
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 1,388,000
<INCOME-PRETAX> 3,863,000
<INCOME-TAX> 1,659,000
<INCOME-CONTINUING> 2,204,000
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 2,204,000
<EPS-BASIC> 0.24
<EPS-DILUTED> 0.23
</TABLE>