<TABLE> <S> <C>

<ARTICLE>                     5
<LEGEND>
1997 RESTATED FOR EARNINGS PER SHARE AMOUNTS
</LEGEND>
<RESTATED>
<MULTIPLIER>                  1,000
<CURRENCY>                    U. S. Dollars
       
<S>                           <C>                   <C>                    <C>                   <C>
<PERIOD-TYPE>                 3-MOS                 3-MOS                  6-MOS                 9-MOS
<FISCAL-YEAR-END>             DEC-31-1998           DEC-31-1997            DEC-31-1997           DEC-31-1997
<PERIOD-START>                JAN-01-1998           JAN-01-1997            JAN-01-1997           JAN-01-1997
<PERIOD-END>                  MAR-31-1998           MAR-31-1997            JUN-30-1997           SEP-30-1997
<EXCHANGE-RATE>                         1                     1                      1                     1
<CASH>                              3,590                 3,901                  3,795                 3,202
<SECURITIES>                            0                     0                      0                    15
<RECEIVABLES>                      28,230                26,655                 20,625                28,516
<ALLOWANCES>                        1,324                 1,328                  1,249                 1,375
<INVENTORY>                        19,619                17,196                 14,965                14,355
<CURRENT-ASSETS>                   73,086                57,319                 60,179                70,185
<PP&E>                            152,916               148,553                150,537               150,991
<DEPRECIATION>                     91,824                75,919                 80,641                84,714
<TOTAL-ASSETS>                    161,397               156,584                156,586               162,648
<CURRENT-LIABILITIES>              30,021                36,639                 35,200                40,482
<BONDS>                            33,449                44,693                 41,145                38,123
<PREFERRED-MANDATORY>                   0                     0                      0                     0
<PREFERRED>                            19                    19                     19                    19
<COMMON>                              113                   109                    109                   109
<OTHER-SE>                         84,791                76,553                 77,283                77,979
<TOTAL-LIABILITY-AND-EQUITY>      161,397               156,584                156,586               162,648
<SALES>                            14,679                12,200                 24,258                39,646
<TOTAL-REVENUES>                   50,230                48,004                 95,145               144,620
<CGS>                               9,024                 7,014                 14,624                24,576
<TOTAL-COSTS>                      48,563                30,031                 59,771                92,334
<OTHER-EXPENSES>                        0                     0                      0                     0
<LOSS-PROVISION>                        0                   136                     76                    81
<INTEREST-EXPENSE>                    790                   994                  2,010                 2,978
<INCOME-PRETAX>                     1,245                   987                  1,830                 2,968
<INCOME-TAX>                          632                   703                  1,046                 1,595
<INCOME-CONTINUING>                   613                   284                    784                 1,374
<DISCONTINUED>                          0                     0                      0                     0
<EXTRAORDINARY>                         0                13,269                 13,269                13,269
<CHANGES>                               0                     0                      0                     0
<NET-INCOME>                          613                13,553                 14,053                14,642
<EPS-PRIMARY>                           0.06                  1.30                   1.36                  1.42
<EPS-DILUTED>                           0.06                  1.30                   1.36                  1.41
        


</TABLE>