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Fair Value Measurements - Summary of difference between aggregate fair value and aggregate unpaid principal balance (Details) - Residential mortgage-backed securities - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair Value $ 13,814 $ 47,218
Aggregate Unpaid Principal Balance 13,828 46,623
Difference (14) 595
Loans 90 or more days past due 0 0
Loans in nonaccrual status $ 0 $ 0