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Fair Value Measurements - Fair Value Measurement and Assumptions (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2024
Jun. 30, 2024
Dec. 31, 2023
Assumptions used in discounted cash flow model to determine fair value of investments classified within level 3      
Doubtful and Impaired commercial collateral dependent loans $ 101,697,000 $ 101,697,000 $ 46,491,000
Impaired commercial collateral dependent receivables appraisals to determine fair value within immediately preceding twelve months 25,064,000 25,064,000 1,272,000
Impaired collateral dependent commercial loans with internal evaluation completed within last twelve months 488,000 488,000 35,061,000
Charges to allowance for probable loan losses in connection with other real estate owned 2,228,000 0 0
Adjustment to fair value in connection with other real estate owned 16,000 0 2,538,000
Fair Value, Measurements, Nonrecurring      
Non-financial assets:      
Other real estate owned 16,000 16,000  
Assumptions used in discounted cash flow model to determine fair value of investments classified within level 3      
Change in net provision, impaired loans 5,471,000 5,471,000 10,221,000
Change in net provision, other real estate owned     2,538,000
Fair Value, Measurements, Nonrecurring | Estimated Fair Value      
Assets:      
Watch-List doubtful loans 33,465,000 33,465,000 46,124,000
Non-financial assets:      
Other real estate owned 2,920,000 2,920,000 307,000
Fair Value, Measurements, Nonrecurring | Estimated Fair Value | Fair Value, Inputs, Level 3      
Assets:      
Watch-List doubtful loans 33,465,000 33,465,000 46,124,000
Non-financial assets:      
Other real estate owned $ 2,920,000 $ 2,920,000 $ 307,000