INTANGIBLES AND GOODWILL - Narrative (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2022	Sep. 30, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Intangibles impairment charge		$ 31,700,000	$ 27,764,000	$ 31,700,000	$ 0
Goodwill	$ 13,100,000		0	13,064,000
Goodwill impairment				0
IPR&D intangible assets:
Finite-Lived Intangible Assets [Line Items]
Total Intangibles			0	14,700,000
Vicinium | Europe | IPR&D intangible assets:
Finite-Lived Intangible Assets [Line Items]
Intangibles impairment charge	14,700,000
Total Intangibles	$ 0		$ 0	$ 14,700,000