Available for Sale Securities, Redeemable Preferred Shares, Ownership Percentage

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

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Sum of the carrying amounts as of the balance sheet date of all investments.

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The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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INVESTMENTS - Summary of Investments (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Investments	$ 34,403			$ 34,403		$ 76,576
Gain (loss) from changes in fair value	0		$ (27,577)	(1,405)	$ (68,985)
Other than temporary impairments on equity method investments	6,700
Redeemable Preferred Stock
Schedule of Equity Method Investments [Line Items]
Fair value	0			0		0
Fair Value Option Investments
Schedule of Equity Method Investments [Line Items]
Equity method investments	0			0		1,405
Other Equity Investments
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 34,403			$ 34,403		$ 75,171
Proceeds from sale of other equity investment		$ 34,000
Other than temporary impairments on equity method investments		$ 6,700
Minimum
Schedule of Equity Method Investments [Line Items]
Available for sale securities, percent ownership of voting stock	19.00%			19.00%		19.00%
Minimum \| Fair Value Option Investments
Schedule of Equity Method Investments [Line Items]
Equity method investment, percent ownership of voting stock	10.00%			10.00%		10.00%
Minimum \| Other Equity Investments
Schedule of Equity Method Investments [Line Items]
Equity method investment, percent ownership of voting stock	1.00%			1.00%		1.00%
Maximum
Schedule of Equity Method Investments [Line Items]
Available for sale securities, percent ownership of voting stock	25.00%			25.00%		25.00%
Maximum \| Fair Value Option Investments
Schedule of Equity Method Investments [Line Items]
Equity method investment, percent ownership of voting stock	19.00%			19.00%		19.00%
Maximum \| Other Equity Investments
Schedule of Equity Method Investments [Line Items]
Equity method investment, percent ownership of voting stock	19.00%			19.00%		19.00%