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STOCK-BASED COMPENSATION - Stock Option Activity (Details)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2021
USD ($)
$ / shares
shares
Number of Options  
Beginning balance at January 1, 2021 (in shares) | shares 1,405,000
Granted (in shares) | shares 0
Exercised (in shares) | shares (818,000)
Forfeited (in shares) | shares (318,000)
Expired (in shares) | shares (8,000)
Ending balance at December 31, 2021 (in shares) | shares 261,000
Vested and exercisable at December 31, 2021 (in shares) | shares 200,000
Weighted Average Exercise Price Per Share  
Beginning balance at January 1, 2021 (in dollars per share) | $ / shares $ 13.54
Granted (in dollars per share) | $ / shares 0
Exercised (in dollars per share) | $ / shares 10.14
Forfeited (in dollars per share) | $ / shares 20.12
Expired (in dollars per share) | $ / shares 8.57
Ending balance at December 31, 2021 (in dollars per share) | $ / shares 16.32
Vested and exercisable at December 31, 2021 (in dollars per share) | $ / shares $ 15.59
Weighted Average Remaining Contractual Term (years) and Aggregate Intrinsic Value  
Options outstanding, weighted average remaining contractual term (years) 4 years 1 month 6 days
Options vested and exercisable, weighted average remaining contractual term (years) 3 years 10 months 24 days
Options outstanding, aggregate intrinsic value | $ $ 774
Options vested and exercisable, aggregate intrinsic value | $ $ 677