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Fair Value Assets and Liabilities measured on nonrecurring basis (Details) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans carried at fair value | $ 5,773,000 | $ 1,103,000
Loans Receivable, Fair Value Disclosure | 6,926,294,000 | 6,794,671,000
Servicing Asset at Fair Value, Amount | 1,700,000 | 13,500,000
Other Assets, Fair Value Disclosure | 6,918,326,000 | 6,783,848,000
Other Repossessed Assets | 605,000 | 3,300,000
Nonrecurring basis |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 5,773,000 | 1,103,000
Servicing Asset at Fair Value, Amount | 1,717,000 | 13,482,000
Other Assets, Fair Value Disclosure | 0 | 775,000
Other Repossessed Assets | 0 | 2,750,000
Nonrecurring basis | Residential real estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 200,000 | 272,000
Nonrecurring basis | Commercial Real Estate Portfolio Segment [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 5,573,000 | 831,000
Nonrecurring basis | Residential real estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Assets, Fair Value Disclosure |  | 775,000
Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 0 | 0
Level 1 | Nonrecurring basis |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Assets, Fair Value Disclosure | 0 | 0
Level 1 | Nonrecurring basis | Other Assets [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Repossessed Assets | 0 |
Level 1 | Nonrecurring basis | Residential real estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Assets, Fair Value Disclosure |  | 0
Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 2,195,000 | 9,720,000
Level 2 | Nonrecurring basis |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Servicing Asset at Fair Value, Amount | 1,717,000 | 13,482,000
Other Assets, Fair Value Disclosure | 0 | 0
Level 2 | Nonrecurring basis | Other Assets [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Repossessed Assets | 0 |
Level 2 | Nonrecurring basis | Residential real estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Assets, Fair Value Disclosure |  | 0
Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans carried at fair value | 5,773,000 | 1,103,000
Loans Receivable, Fair Value Disclosure | 6,924,099,000 | 6,784,951,000
Other Assets, Fair Value Disclosure | 6,918,326,000 | 6,783,848,000
Fair Value, Inputs, Level 3 [Member] | Nonrecurring basis |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 5,773,000 | 1,103,000
Other Assets, Fair Value Disclosure | 0 | 775,000
Other Repossessed Assets | 0 | 2,750,000
Fair Value, Inputs, Level 3 [Member] | Nonrecurring basis | Residential real estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 200,000 | 272,000
Fair Value, Inputs, Level 3 [Member] | Nonrecurring basis | Commercial Real Estate Portfolio Segment [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | $ 5,573,000 | 831,000
Fair Value, Inputs, Level 3 [Member] | Nonrecurring basis | Residential real estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Assets, Fair Value Disclosure |  | $ 775,000

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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI https://asc.fasb.org/subtopic&trid=2196772 + Details
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