SUPPLEMENTAL CONDENSED CONSOLIDATED BALANCE SHEETS AND STATEMENTS OF OPERATIONS INFORMATION - Schedule of Other Income (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Supplemental Consolidated Balance Sheet & Statement of Operations Information [Abstract]
Interest income	$ 1,430	$ 1,915	$ 3,986	$ 3,851
Interest expense	(8,009)	(5,442)	(14,967)	(11,133)
Changes in fair value of investments	0	(27,577)	(1,405)	(68,985)
Foreign currency gains (losses), net	4,884	2,610	(1,612)	918
Impairments of investments	0	0	(6,684)	0
Other income (expense), net	$ (1,695)	$ (28,494)	$ (20,682)	$ (75,349)

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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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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount of interest income earned from interest bearing assets classified as other.

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The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.

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