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EARNINGS PER SHARE (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Numerator:      
Net income $ 41,100 $ 91,106 $ 31,653
Denominator:      
Shares to be issued - acquisition (in shares) 0 0 36,000
Unvested restricted stock (in shares) (2,000) (2,000) 0
Effect of weighted average shares outstanding (in shares) (97,000) (2,294,000) (601,000)
Basic weighted average shares outstanding 51,312,000 48,793,000 47,226,000
Dilutive effect of stock options and stock awards (in shares) 203,000 252,000 740,000
Diluted weighted average shares outstanding 51,515,000 49,045,000 47,966,000
Antidilutive potentially issuable shares (in shares) 10,000 0 2,000
Class A Common Stock      
Denominator:      
Common stock, outstanding shares 50,423,000 50,101,000 46,803,000
Class B Common Stock      
Denominator:      
Common stock, outstanding shares 988,000 988,000 988,000