Exhibit 12 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (amounts in thousands of dollars) Six Months Ended Year Ended December 31, June 30, ------------------------------------------ ---------------------- 1998 1999 Pro Pro 1994 1995 1996 1997 1998 Forma 1998 1999 Forma ------ ------ ------ ------ ------ ------- ------ ------- ------- Pre-tax income (loss) from continuing operations............. $4,029 $4,455 $4,348 $4,365 $ 601 $12,298 $3,098 $ 4,457 $ 8,782 Rental expense--20% of total................ 156 209 223 226 326 1,508 124 612 754 Interest expense...... 77 106 722 841 6,519 20,692 653 8,283 10,345 ------ ------ ------ ------ ------ ------- ------ ------- ------- Adjusted income......... $4,262 $4,770 $5,293 $5,432 $7,446 $34,498 $3,875 $13,352 $19,881 ====== ====== ====== ====== ====== ======= ====== ======= ======= Fixed Charges: Interest expense and amortization of debt discount/premium..... $ 77 $ 106 $ 722 $ 841 $6,519 $20,692 $ 653 $ 8,283 $10,345 Rental expense--20% of total................ 156 209 223 226 326 1,508 124 612 754 ------ ------ ------ ------ ------ ------- ------ ------- ------- Total applicable fixed charges....... $ 233 $ 315 $ 945 $1,067 $6,845 $22,200 $ 777 $ 8,895 $11,099 ====== ====== ====== ====== ====== ======= ====== ======= ======= Ratio of earnings to fixed charges.......... 18.29 15.14 5.60 5.09 1.09 1.55 4.99 1.50 1.79 ====== ====== ====== ====== ====== ======= ====== ======= =======