EXHIBIT 12 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (1) (In Thousands, except ratio) For the three months ended March 31, 1999 1998 - ------------------------------------------------------------------------- EARNINGS Pre-tax income $13,147 $14,741 Fixed charges 3,217 3,915 ============================= Total(a) $16,364 $18,656 ============================= FIXED CHARGES Interest expense and amortization of debt discount and premium on all indebtedness $3,013 $3,701 Interest portion of rental expense 204 214 ----------------------------- Total fixed charges (b) $3,217 $3,915 ============================= Ratio of earnings to fixed 5.1x 4.8x charges(a)/(b) (1) For purposes of determining this ratio, earnings consist of income before income taxes and cumulative effect of accounting change (1999), plus fixed charges. Fixed charges consist of interest expense and the portion of operating leases that management believes are representative of the interest factor.