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Fair Value Measurements - Assets and liabilities recorded at fair value on recurring basis (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other liabilities | Other liabilities
Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for sale | $ 6,734 | $ 47,218
Liabilities measured at a fair value | 30,067 | 5,194
Recurring | Derivative Financial Instruments, Assets |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets measured at a fair value | 1,636,532 | 2,676,459
Derivative Financial Instruments, Liability | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liability | 2 | 47
Interest Rate Caps | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative asset | 31,039 | 5,197
Derivative liability | 30,065 | 5,147
Interest Rate Swap | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liability | 0 | 0
U.S. treasury bonds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 46,327 | 49,458
U.S. treasury bonds | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 46,326 | 49,458
U.S. agency securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 669,728 | 622,387
U.S. agency securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 669,728 | 622,387
Residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 820,503 | 1,618,027
Loans held for sale | 6,734 | 47,218
Residential mortgage-backed securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 820,502 | 1,677,673
Corporate mortgage-backed securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 50,214 |
US states and political subdivisions debt securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 10,088 | 145,431
Corporate bonds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 1,808 | 128,459
Corporate bonds | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 1,808 | 128,459
Mortgage banking derivatives | Recurring | Derivative Financial Instruments, Assets |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative asset | 93 | 636
Fair Value, Inputs, Level 1 | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for sale | 0 | 0
Assets measured at a fair value | 0 | 0
Derivative liability |  | 0
Liabilities measured at a fair value | 0 | 0
Fair Value, Inputs, Level 1 | Derivative Financial Instruments, Liability |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liability | 0 |
Fair Value, Inputs, Level 1 | Interest Rate Caps | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative asset | 0 | 0
Derivative liability | 0 | 0
Fair Value, Inputs, Level 1 | Interest Rate Swap | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liability | 0 | 0
Fair Value, Inputs, Level 1 | U.S. treasury bonds | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 0 | 0
Fair Value, Inputs, Level 1 | U.S. agency securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 0 | 0
Fair Value, Inputs, Level 1 | Residential mortgage-backed securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 0 | 0
Fair Value, Inputs, Level 1 | Corporate mortgage-backed securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 0 |
Fair Value, Inputs, Level 1 | US states and political subdivisions debt securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 0 | 0
Fair Value, Inputs, Level 1 | Corporate bonds | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 0 | 0
Fair Value, Inputs, Level 1 | Mortgage banking derivatives | Recurring | Derivative Financial Instruments, Assets |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative asset | 0 | 0
Fair Value, Inputs, Level 2 | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for sale | 6,734 | 47,218
Assets measured at a fair value | 1,636,439 | 2,665,823
Derivative liability |  | 47
Liabilities measured at a fair value | 30,067 | 5,194
Fair Value, Inputs, Level 2 | Derivative Financial Instruments, Liability | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liability | 2 |
Fair Value, Inputs, Level 2 | Interest Rate Caps | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative asset | 31,039 | 5,197
Derivative liability | 30,065 | 5,147
Fair Value, Inputs, Level 2 | Interest Rate Swap | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liability | 0 | 0
Fair Value, Inputs, Level 2 | U.S. treasury bonds | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 46,326 | 49,458
Fair Value, Inputs, Level 2 | U.S. agency securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 669,728 | 622,387
Fair Value, Inputs, Level 2 | Residential mortgage-backed securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 820,502 | 1,677,673
Fair Value, Inputs, Level 2 | Corporate mortgage-backed securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 50,214 |
Fair Value, Inputs, Level 2 | US states and political subdivisions debt securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 10,088 | 145,431
Fair Value, Inputs, Level 2 | Corporate bonds | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 1,808 | 118,459
Fair Value, Inputs, Level 2 | Mortgage banking derivatives | Recurring | Derivative Financial Instruments, Assets |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative asset | 0 | 0
Fair Value, Inputs, Level 3 | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for sale | 0 | 0
Assets measured at a fair value | 93 | 10,636
Derivative liability |  | 0
Liabilities measured at a fair value | 0 | 0
Fair Value, Inputs, Level 3 | Derivative Financial Instruments, Liability | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liability | 0 |
Fair Value, Inputs, Level 3 | Interest Rate Caps | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative asset | 0 | 0
Derivative liability | 0 | 0
Fair Value, Inputs, Level 3 | Interest Rate Swap | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liability | 0 | 0
Fair Value, Inputs, Level 3 | U.S. treasury bonds | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 0 | 0
Fair Value, Inputs, Level 3 | U.S. agency securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 0 | 0
Fair Value, Inputs, Level 3 | Residential mortgage-backed securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 0 | 0
Fair Value, Inputs, Level 3 | Corporate mortgage-backed securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 0 |
Fair Value, Inputs, Level 3 | US states and political subdivisions debt securities | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 0 | 0
Fair Value, Inputs, Level 3 | Corporate bonds | Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investment securities available-for-sale, at fair value, net of allowance for credit loss of $0 in 2021 | 0 | 10,000
Fair Value, Inputs, Level 3 | Mortgage banking derivatives | Recurring | Derivative Financial Instruments, Assets |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative asset | $ 93 | $ 636

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