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EARNINGS PER SHARE - Schedule of Earnings Per Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Earnings Per Share [Abstract]      
Net income $ 26,463 $ 16,924 $ 12,805
Weighted average shares outstanding - basic (in shares) 10,942 10,362 8,360
Dilutive effect of share-based compensation (in shares) 92 152 177
Weighted average shares outstanding - diluted (in shares) 11,034 10,514 8,537
Per share information:      
Basic earnings per share (in dollars per share) $ 2.42 $ 1.63 $ 1.53
Diluted earnings per share (in dollars per share) $ 2.40 $ 1.61 $ 1.50