WARRANTS - Changes in fair value of warrant liabilities (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
WARRANTS.
Fair value at beginning of period	$ 71,701			$ 59,877
Change in fair value of Warrants	(12,076)	$ (12,831)	$ (12,076)	(44,027)	$ (12,076)
Fair value at end of period	$ 59,625	$ 15,850	$ 59,625	$ 15,850	$ 59,625

Amount of expense (income) related to adjustment to fair value of warrant liability.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section 25
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=109262497&loc=d3e20148-110875

Name:	us-gaap_FairValueAdjustmentOfWarrants
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration