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LEASES - Lease Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Leases [Abstract]      
Fixed $ 3,884 $ 957 $ 3,770
Short-term 553 273 214
Variable 119 143 72
Sublease income 0 (61) (154)
Total lease expense, net $ 4,556 $ 1,312 $ 3,902