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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES : Trading Securities (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities - cost	$ 44,556	$ 36,851
Available-for-sale Securities, Gross Unrealized Gain	91,131	74,099
Available-for-sale Securities, Gross Unrealized Loss	(749)	(1,847)
Equity securities at fair value	134,938	109,103
Equity Securites Lf Fund Public Securities [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities - cost	31,665	32,765
Available-for-sale Securities, Gross Unrealized Gain	90,312	72,689
Available-for-sale Securities, Gross Unrealized Loss	(539)	(583)
Equity securities at fair value	121,438	104,871
Equity Securities Other Equity [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities - cost	12,891	4,086
Available-for-sale Securities, Gross Unrealized Gain	819	1,410
Available-for-sale Securities, Gross Unrealized Loss	(210)	(1,264)
Equity securities at fair value	$ 13,500	$ 4,232

X

- Definition

Fair value portion of investments accounted under the equity method.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 25
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=125513658&loc=d3e32014-111567

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123583765&loc=SL75117546-209714

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

+ References

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-Name Accounting Standards Codification
-Topic 321
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-Section 50
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