FAIR VALUE OF FINANCIAL INSTRUMENTS - Fair Value (Details) - Recurring - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Money market funds
Assets
Assets fair value	$ 3,855	$ 5,216
U.S. Treasury bills
Assets
Assets fair value	9,977	9,961
Level 1 \| Money market funds
Assets
Assets fair value	3,855	5,216
Level 1 \| U.S. Treasury bills
Assets
Assets fair value	$ 9,977	$ 9,961

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant