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Loans - Recorded Investment in Loans and Allowance for Credit Losses by Loss Estimation Methodology (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | --- | --- | --- | --- | ---
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total | $ 5,528,093 |  | $ 5,231,331 |  |  |
Loans, allowance for credit losses | 63,123 | $ 62,173 | 64,586 | $ 77,104 | $ 85,136 | $ 86,670
Probability of Default |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collectively evaluated, probability of default | 5,511,181 |  | 5,204,478 |  |  |
Loan balance collectively evaluated | 58,007 |  | 53,311 |  |  |
Fair Value of Collateral |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loan balance individually evaluated | 12,517 |  | 16,865 |  |  |
Loan balance individually evaluated | 5,070 |  | 6,701 |  |  |
Discounted Cash Flow |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loan balance individually evaluated | 4,395 |  | 9,988 |  |  |
Loan balance individually evaluated | 46 |  | 4,574 |  |  |
Real estate | Commercial real estate |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total | 1,909,054 |  | 1,693,512 |  |  |
Loans, allowance for credit losses | 16,112 | 14,606 | 13,425 | 16,282 | 18,397 | 15,430
Real estate | Commercial real estate | Probability of Default |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collectively evaluated, probability of default | 1,907,141 |  | 1,691,269 |  |  |
Loan balance collectively evaluated | 16,087 |  | 13,416 |  |  |
Real estate | Commercial real estate | Fair Value of Collateral |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loan balance individually evaluated | 0 |  | 166 |  |  |
Loan balance individually evaluated | 0 |  | 0 |  |  |
Real estate | Commercial real estate | Discounted Cash Flow |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loan balance individually evaluated | 1,913 |  | 2,077 |  |  |
Loan balance individually evaluated | 25 |  | 9 |  |  |
Real estate | Construction/land/land development |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total | 635,556 |  | 530,083 |  |  |
Loans, allowance for credit losses | 4,707 | 4,580 | 4,011 | 5,602 | 7,389 | 8,191
Real estate | Construction/land/land development | Probability of Default |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collectively evaluated, probability of default | 634,432 |  | 529,789 |  |  |
Loan balance collectively evaluated | 4,689 |  | 3,997 |  |  |
Real estate | Construction/land/land development | Fair Value of Collateral |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loan balance individually evaluated | 212 |  | 0 |  |  |
Loan balance individually evaluated | 0 |  | 0 |  |  |
Real estate | Construction/land/land development | Discounted Cash Flow |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loan balance individually evaluated | 912 |  | 294 |  |  |
Loan balance individually evaluated | 18 |  | 14 |  |  |
Real estate | Residential real estate |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total | 1,005,623 |  | 909,739 |  |  |
Loans, allowance for credit losses | 5,851 | 5,821 | 6,116 | 9,059 | 8,294 | 9,418
Real estate | Residential real estate | Probability of Default |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collectively evaluated, probability of default | 998,586 |  | 898,456 |  |  |
Loan balance collectively evaluated | 5,667 |  | 5,017 |  |  |
Real estate | Residential real estate | Fair Value of Collateral |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loan balance individually evaluated | 6,482 |  | 8,150 |  |  |
Loan balance individually evaluated | 184 |  | 19 |  |  |
Real estate | Residential real estate | Discounted Cash Flow |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loan balance individually evaluated | 555 |  | 3,133 |  |  |
Loan balance individually evaluated | 0 |  | 1,080 |  |  |
Commercial and industrial |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total | 1,430,239 |  | 1,454,235 |  |  |
Loans, allowance for credit losses | 35,477 | 36,315 | 40,146 | 45,049 | 49,342 | 51,857
Commercial and industrial | Probability of Default |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collectively evaluated, probability of default | 1,423,402 |  | 1,441,204 |  |  |
Loan balance collectively evaluated | 30,589 |  | 29,995 |  |  |
Commercial and industrial | Fair Value of Collateral |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loan balance individually evaluated | 5,822 |  | 8,547 |  |  |
Loan balance individually evaluated | 4,885 |  | 6,680 |  |  |
Commercial and industrial | Discounted Cash Flow |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loan balance individually evaluated | 1,015 |  | 4,484 |  |  |
Loan balance individually evaluated | 3 |  | 3,471 |  |  |
Mortgage warehouse lines of credit |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total | 531,888 |  | 627,078 |  |  |
Loans, allowance for credit losses | 459 | 329 | 340 | 560 | 923 | 856
Mortgage warehouse lines of credit | Probability of Default |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collectively evaluated, probability of default | 531,888 |  | 627,078 |  |  |
Loan balance collectively evaluated | 459 |  | 340 |  |  |
Mortgage warehouse lines of credit | Fair Value of Collateral |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loan balance individually evaluated | 0 |  | 0 |  |  |
Loan balance individually evaluated | 0 |  | 0 |  |  |
Mortgage warehouse lines of credit | Discounted Cash Flow |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loan balance individually evaluated | 0 |  | 0 |  |  |
Loan balance individually evaluated | 0 |  | 0 |  |  |
Consumer |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total | 15,733 |  | 16,684 |  |  |
Loans, allowance for credit losses | 517 | $ 522 | 548 | $ 552 | $ 791 | $ 918
Consumer | Probability of Default |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collectively evaluated, probability of default | 15,732 |  | 16,682 |  |  |
Loan balance collectively evaluated | 516 |  | 546 |  |  |
Consumer | Fair Value of Collateral |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loan balance individually evaluated | 1 |  | 2 |  |  |
Loan balance individually evaluated | 1 |  | 2 |  |  |
Consumer | Discounted Cash Flow |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loan balance individually evaluated | 0 |  | 0 |  |  |
Loan balance individually evaluated | $ 0 |  | $ 0 |  |  |

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- Definition Financing Receivable Excluding Loans At Fair Value, Before Allowance for Credit Loss + References No definition available. + Details
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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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