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Marketable Securities - Narrative (Details)
$ in Thousands
Mar. 31, 2022
USD ($)
position
Dec. 31, 2021
USD ($)
position
Investments, Debt and Equity Securities [Abstract]    
Number of securities, unrealized losses 12 months or longer | position 16 23
Unrealized losses , 12 months or longer $ 27 $ 6
Number of securities, unrealized losses, less than 12 months | position 99 106
Unrealized losses less than 12 months $ 148 $ 94
Gross unrealized loss position greater than $ 21 $ 12
Amortized cost, percentage 0.70% 0.40%