v3.20.2
NET INCOME PER COMMON SHARE - Income Per Share Calculation (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 28, 2020
Jun. 30, 2019
Jun. 28, 2020
Jun. 30, 2019
Earnings Per Share [Abstract]        
Net income for basic and diluted per share calculation $ 714 $ 27,416 $ 21,901 $ 48,265
Weighted average shares outstanding - basic (in shares) 22,667 23,102 22,840 23,071
Effect of potentially dilutive securities (in shares) 265 214 258 211
Weighted average common shares outstanding - diluted (in shares) 22,932 23,316 23,098 23,282
Basic net income per common share (in dollars per share) $ 0.03 $ 1.19 $ 0.96 $ 2.09
Diluted net income per common share (in dollars per share) $ 0.03 $ 1.18 $ 0.95 $ 2.07