XML 41 R30.htm IDEA: XBRL DOCUMENT v3.22.2
Fair Value Measurements - Held-to-maturity debt securities at amortized cost (Details) - US Treasury Securities [Member]
$ in Thousands
Jun. 30, 2022
USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Amortized Cost $ 174,711
Unrealized Gains 2
Unrealized Losses 21
Aggregate Fair Value $ 174,692