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Investments - Schedule of Gross Unrealized Holding Losses and Fair Value for Investments in Unrealized Loss Position (Details)
$ in Thousands
Mar. 31, 2021
USD ($)
Schedule of Available-for-Sale Securities [Line Items]  
Less than 12 months, Fair value $ 11,743
Less than 12 months, Unrealized loss (3)
U.S. Government Debt Securities  
Schedule of Available-for-Sale Securities [Line Items]  
Less than 12 months, Fair value 10,240
Less than 12 months, Unrealized loss (3)
Corporate Bonds  
Schedule of Available-for-Sale Securities [Line Items]  
Less than 12 months, Fair value $ 1,503