Exhibit 12 RATIO OF EARNINGS TO FIXED CHARGES The following table sets forth our consolidated ratios of earnings to fixed charges for the periods indicated and the basis for the calculation of such ratios. December 31, Sept. 30, -------------------------------------------- --------- 1997 1998 1999 2000 2001 2002 ------ ------ ------ ------ ------ --------- Net income .................... (1,506) (1.028) 1,288 (397) 3,035 4,573 Provision for income taxes .... (724) (468) 1,258 550 2,095 2,357 Income before income taxes .... (2,230) (1.496) 2,546 153 5,130 6,930 Total fixed charges ........... 5,023 4,934 17,272 21,024 19,070 11,046 Total earnings ................ 2,793 3,438 19,818 21,177 24,200 17,976 Ratio of earnings to fixed charges ....................... 0.56 0.70 1.15 1.01 1.27 1.63