EXHIBIT 11.1 CALCULATION OF BASIC AND DILUTED EARNINGS PER SHARE BASIC EARNINGS PER SHARE Three Months Six Months Ended March 31, Ended March 31, ----------------------- ---------------------- 1998 1997 1998 1997 ------ ------ ------ ------ Net income $6,319 $2,534 $10,270 $4,820 Weighted average number of shares outstanding - Basic 4,749 3,552 4,741 3,033 Net income per share - Basic $ 1.33 $ 0.71 $ 2.17 $ 1.59 ====================================================== DILUTED EARNINGS PER SHARE Net income $6,319 $2,534 $10,270 4,820 Weighted average number of shares outstanding - Basic 4,749 3,552 4,741 3,033 Dilutive effect of outstanding options and warrants (as determined by the application of the treasury stock method) 167 1,073 170 1,012 ------ ------ ------- ------ Weighted average number of shares outstanding - Diluted 4,916 4,625 4,911 4,045 Net income per share - Diluted $ 1.29 $ 0.55 $ 2.09 $ 1.19 ======================================================