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SOFTWARE DEVELOPMENT - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]    
Capitalized software development costs   $ 8.8
Increase in capitalized software development costs   $ 4.6
Software Development    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life 5 years