Investments Cost Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Investments, All Other Investments [Abstract]
Cost Method Investments, Original Cost	$ 54,145		$ 34,977
Cost-method Investments, Other than Temporary Impairment	23,769		4,164
Unrealized Loss on Securities	(480)		(3,678)
Cost Method Investments	29,896		27,135
Variable Interest Entity, Measure of Activity, Other, Amount	22,800	$ 9,800
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount	19,600		$ 4,200
Exchange of Available-For-Sale Debt Securities	18,300
Debt Securities, Available-for-sale, Realized Loss	4,400
Debt and Equity Securities, Realized Gain (Loss)	3,200
Other Investments	$ 800

Exchange of Available-For-Sale Debt Securities

No definition available.

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- Definition

Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

+ References

No definition available.

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- Definition

Original amount of cost-method investments at the acquisition date.

+ References

No definition available.

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- Definition

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the cost 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. 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.

+ References

No definition available.

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- Definition

Amount of realized gain (loss) on investment in debt and equity securities.

+ References

No definition available.

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- Definition

Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
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- Definition

Amount of impairment loss on investment in equity security without readily determinable fair value.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
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-Section 50
-Paragraph 3
-Subparagraph (b)
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- References

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- Definition

Amount of investments classified as other.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 210
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- Definition

The increase (decrease), resulting in a loss, in the difference between the fair value and the carrying value, or in the comparative fair values, of securities held at each balance sheet date, that was included in earnings for the period.

+ References

No definition available.

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- Definition

The amount of activity, consisting of a transaction or a measure not described elsewhere in the taxonomy, occurring during the period between the reporting entity and the Variable Interest Entity (VIE) or potential VIE.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
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