Exhibit 11 - Calculation of Earnings per Share Three Months Ended Six Months Ended (in thousands except per share data) June 28, 1998 June 29, 1997 June 28, 1998 June 29, 1997 - ----------------------------------------------------------------------------------------------------------------------------------- Basic Earnings per share: Net income $ 9,392 $ 6,271 $17,672 $11,964 Weighted average shares outstanding 29,365 28,888 29,264 28,822 ------------------------------------------------------------- Basic earnings per share $ 0.32 $ 0.22 $ 0.60 $ 0.42 ============================================================= Diluted Earnings per Share: Net income $ 9,392 $ 6,271 $17,672 $11,964 Weighted average shares outstanding 29,365 28,888 29,264 28,822 Dilutive effect of outstanding common stock options 1,157 631 1,005 620 ------------------------------------------------------------- Diluted weighted average shares outstanding 30,522 29,519 30,269 29,442 ------------------------------------------------------------- Diluted earnings per share $ 0.31 $ 0.21 $ 0.58 $ 0.41 ============================================================