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8. Other Income and Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest and investment income	$ (18,300)	$ (2,800)
Net realized (gain) loss on investments	(100)	(400)
Other Nonoperating (Income)		(100)
Other Nonoperating Expense	200
Equity Method Investment, Other than Temporary Impairment	800	0
Other Nonoperating Income (Expense)	$ 17,407	$ 3,273

X

- Definition

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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- Definition

Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities.

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Amount of expense related to nonoperating activities, classified as other.

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Amount of income related to nonoperating activities, classified as other.

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Amount of realized gain (loss) on investment.

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