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Marketable Securities - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Marketable securities, realized gains	$ 174	$ 474	$ 483
Marketable securities, realized loss	$ 275	$ 912	$ 151

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Marketable Securities, Realized Gain

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