COMMITMENTS AND CONTINGENCIES - Right-of-use Assets (Details) $ in Thousands	Dec. 31, 2019 USD ($)
COMMITMENTS AND CONTINGENCIES:
Finance lease right-of-use assets	$ 78
Accumulated amortization	(21)
Finance lease right-of-use assets, net	$ 57

Amount of lessee's right to use underlying asset under finance lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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