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Marketable Securities - Maturities of Available-for-sale Securities (Details)
$ in Thousands
Mar. 31, 2022
USD ($)
Investments Debt And Equity Securities [Abstract]  
Due within one year, amortized cost $ 402
Due after one year through five years, amortized cost 563
Due after five years, amortized cost 0
Total available-for-sale securities, amortized cost 965
Due within one year, estimated fair value 398
Due after one year through five years, estimated fair value 542
Due after five years, estimated fair value 0
Total available-for-sale securities, estimated fair value $ 940