INVESTMENTS (Net Unrealized Gains (Losses) Still Held (Details) - Equity Securities - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Debt Securities, Available-for-sale [Line Items]
Equity Securities, FV-NI, Gain (Loss), Total	$ 3,319	$ 1,241	$ (744)	$ 3,625
Less: net realized and unrealized gains (losses)	53	(76)	(582)	250
Net unrealized gains (losses) still held as of the end-of-period	$ 3,266	$ 1,317	$ (162)	$ 3,375

Amount of unrealized and realized gain (loss) on 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/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=116654751&loc=SL75117546-209714

Name:	us-gaap_EquitySecuritiesFvNiGainLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration