FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities, Fair Value, Recurring Basis (Details) - Fair Value, Recurring - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Level 1
Assets:
Other current assets	$ 36	$ 176
Convertible loans	5,774
Convertible loans	0	5,905
Total	5,810	6,081
Liabilities:
Sinclair Performance Warrants	0	0
Contingent consideration	0	0
Total	0	0
Level 2
Assets:
Other current assets	0	0
Convertible loans	0
Convertible loans	0	0
Total	0	0
Liabilities:
Sinclair Performance Warrants	0	0
Contingent consideration	0	0
Total	0	0
Level 3
Assets:
Other current assets	0	0
Convertible loans	0
Convertible loans	2,138	2,025
Total	2,138	2,025
Liabilities:
Sinclair Performance Warrants	56,185	69,564
Contingent consideration	13,077	34,931
Total	$ 69,262	$ 104,495