MARKETABLE SECURITIES AND FAIR VALUE MEASUREMENTS - MARKETABLE EQUITY SECURITIES (Details) $ in Thousands	Sep. 30, 2021 USD ($)
Fair Value Disclosures [Abstract]
Equity securities, cost	$ 27,538
Equity securities, unrealized gain (loss)	490
Equity securities	$ 28,028

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740

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