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Fair Value - Change in Carrying Value of Level 3 Financial Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Fair value measurement Level 3 reconciliation [Abstract]        
Balance as of beginning of period $ 119 $ 124 $ 126 $ 125
Purchases 0 0 0 0
Sales 0 0 0 0
Realized gains (losses), net 0 0 0 0
Unrealized gains (losses), net 0 2 (7) 1
Balance as of end of period $ 119 $ 126 $ 119 $ 126