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ACCOUNTING POLICIES - Valuation Technique And Significant Unobservable Inputs Of Equity Securities (Details) $ in Thousands	Dec. 31, 2022 USD ($) yr	Dec. 31, 2021 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, at fair value	$ 82,823	$ 102,529
Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, at fair value	82,800
Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, at fair value	82,787	$ 102,355
Level 3 | Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, at fair value	82,787
tZERO | Level 3 | Fair Value, Recurring | Term to liquidity | Market approach - transaction backsolve with an option pricing model
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, at fair value	$ 78,867
Inputs | yr	5
tZERO | Level 3 | Fair Value, Recurring | Volatility | Market approach - transaction backsolve with an option pricing model
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Inputs | yr	1.25
tZERO | Level 3 | Fair Value, Recurring | Percentage change in enterprise value for guideline public companies | Market approach - transaction backsolve with an option pricing model
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Inputs | yr	(0.324)
SpeedRoute | Level 3 | Fair Value, Recurring | Market approach - recent transactions
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, at fair value	$ 3,920

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI https://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740

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Value of input used to measure 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 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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