1 FORM 10-Q EXHIBIT 11 STATEMENT RE: COMPUTATION OF PER SHARE EARNINGS Net income per share is computed based on the weighted average number of shares outstanding, including the dilutive effect of stock options, as follows: - -------------------------------------------------------------------------------------------------------------------- Three Months Ended Six Months Ended - -------------------------------------------------------------------------------------------------------------------- June 30, June 30, (in thousands, except per share amounts) 1997 1996 1997 1996 - -------------------------------------------------------------------------------------------------------------------- NET INCOME: $10,107 $9,260 $19,315 $18,001 ======= ====== ======= ======= PRIMARY EARNINGS PER SHARE: Actual average shares outstanding 14,378 14,423 14,364 14,389 Net effect of the assumed exercise of stock options -- based on the treasury stock method using average market price for the period 278 271 282 295 ------ ------ ------ ------ Pro forma average shares outstanding 14,656 14,694 14,646 14,684 ====== ====== ====== ====== Net Income Per Share $0.69 $0.63 $1.32 $1.23 ===== ===== ===== ===== FULLY DILUTED EARNINGS PER SHARE: Actual average shares outstanding 14,379 14,423 14,364 14,389 Net effect of the assumed exercise of stock options -- based on the treasury stock method using higher of average or closing market price 309 271 316 295 ------ ------ ------ ------ Pro forma average shares outstanding 14,688 14,694 14,680 14,684 ====== ====== ====== ====== Net Income Per Share $0.69 $0.63 $1.32 $1.23 ====== ====== ====== ====== 24