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Investments - Schedule of Contractual Maturity of Available-for-sale Investments (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Schedule Of Investments [Line Items]    
Less than 1 year   $ 0
1 to 5 years   4,292
More than 5 years   0
Total $ 4,292 4,292
Corporate securities    
Schedule Of Investments [Line Items]    
Less than 1 year   0
1 to 5 years   4,292
More than 5 years   0
Total $ 4,292 $ 4,292