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Fair Value Measurements and Fair Value of Financial Instruments, Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Financial assets [Abstract] |  |
HTM securities | $ 814,100 | $ 735,260
Carrying Amount [Member] | Level 1 [Member] |  |
Financial liabilities [Abstract] |  |
Subordinated debt | 100,000 | 100,000
Carrying Amount [Member] | Level 2 [Member] |  |
Financial assets [Abstract] |  |
HTM securities | 929,541 | 733,210
Financial liabilities [Abstract] |  |
Time deposits | 445,673 | 501,472
Long-term debt | 3,322 | 13,995
Junior subordinated debt | 101,196 | 101,196
Carrying Amount [Member] | Level 3 [Member] |  |
Financial assets [Abstract] |  |
Net loans | 7,808,071 | 7,407,289
Estimated Fair Value [Member] | Level 1 [Member] |  |
Financial liabilities [Abstract] |  |
Subordinated debt | 96,025 | 107,402
Estimated Fair Value [Member] | Level 2 [Member] |  |
Financial assets [Abstract] |  |
HTM securities | 814,100 | 735,260
Financial liabilities [Abstract] |  |
Time deposits | 428,762 | 500,717
Long-term debt | 3,066 | 14,260
Junior subordinated debt | 96,107 | 107,569
Estimated Fair Value [Member] | Level 3 [Member] |  |
Financial assets [Abstract] |  |
Net loans | $ 7,538,178 | $ 7,530,768

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