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Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Summary of Risk Rating Categories of Loans and Leases Considered for Inclusion in Allowance for Loan and Lease Losses Calculation (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020 | Sep. 30, 2020
--- | --- | --- | ---
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | $ 4,609,228 | $ 4,340,535 | $ 4,374,517
Commercial Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 1,618,378 | 1,421,670 | 1,347,855
Residential Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 507,754 | 572,271 | 633,396
Construction, Land Development, and Other Land |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 338,412 | 230,733 | 239,034
Commercial and Industrial |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 1,536,405 | 1,368,900 | 1,328,809
Paycheck Protection Program |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 268,081 | 517,815 | 622,191
Installment and Other |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 1,442 | 2,005 | 3,143
Lease Financing Receivables |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 338,756 | 227,141 | $ 200,089
Loans Excluding Acquired Impaired Loans |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 4,453,948 | 4,138,718 |
Loans Excluding Acquired Impaired Loans | Commercial Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 1,533,557 | 1,313,186 |
Loans Excluding Acquired Impaired Loans | Residential Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 445,861 | 493,431 |
Loans Excluding Acquired Impaired Loans | Construction, Land Development, and Other Land |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 336,666 | 226,620 |
Loans Excluding Acquired Impaired Loans | Commercial and Industrial |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 1,529,754 | 1,358,722 |
Loans Excluding Acquired Impaired Loans | Paycheck Protection Program |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 268,081 | 517,815 |
Loans Excluding Acquired Impaired Loans | Installment and Other |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 1,273 | 1,803 |
Loans Excluding Acquired Impaired Loans | Lease Financing Receivables |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 338,756 | 227,141 |
Loans Excluding Acquired Impaired Loans | Pass |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 3,878,401 | 3,477,922 |
Loans Excluding Acquired Impaired Loans | Pass | Commercial Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 1,297,981 | 1,064,623 |
Loans Excluding Acquired Impaired Loans | Pass | Residential Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 422,843 | 463,103 |
Loans Excluding Acquired Impaired Loans | Pass | Construction, Land Development, and Other Land |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 291,496 | 180,458 |
Loans Excluding Acquired Impaired Loans | Pass | Commercial and Industrial |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 1,261,335 | 1,027,399 |
Loans Excluding Acquired Impaired Loans | Pass | Paycheck Protection Program |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 268,081 | 517,815 |
Loans Excluding Acquired Impaired Loans | Pass | Installment and Other |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 1,190 | 1,706 |
Loans Excluding Acquired Impaired Loans | Pass | Lease Financing Receivables |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 335,475 | 222,818 |
Loans Excluding Acquired Impaired Loans | Watch |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 394,339 | 428,702 |
Loans Excluding Acquired Impaired Loans | Watch | Commercial Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 143,047 | 134,381 |
Loans Excluding Acquired Impaired Loans | Watch | Residential Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 16,862 | 22,086 |
Loans Excluding Acquired Impaired Loans | Watch | Construction, Land Development, and Other Land |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 37,795 | 46,162 |
Loans Excluding Acquired Impaired Loans | Watch | Commercial and Industrial |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 196,288 | 225,930 |
Loans Excluding Acquired Impaired Loans | Watch | Paycheck Protection Program |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Watch | Installment and Other |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 83 | 96 |
Loans Excluding Acquired Impaired Loans | Watch | Lease Financing Receivables |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 264 | 47 |
Loans Excluding Acquired Impaired Loans | Special Mention |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 91,791 | 123,322 |
Loans Excluding Acquired Impaired Loans | Special Mention | Commercial Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 48,605 | 60,022 |
Loans Excluding Acquired Impaired Loans | Special Mention | Residential Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 3,036 | 3,795 |
Loans Excluding Acquired Impaired Loans | Special Mention | Construction, Land Development, and Other Land |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 7,375 | 0 |
Loans Excluding Acquired Impaired Loans | Special Mention | Commercial and Industrial |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 30,841 | 56,784 |
Loans Excluding Acquired Impaired Loans | Special Mention | Paycheck Protection Program |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Special Mention | Installment and Other |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Special Mention | Lease Financing Receivables |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 1,934 | 2,721 |
Loans Excluding Acquired Impaired Loans | Substandard |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 89,120 | 108,172 |
Loans Excluding Acquired Impaired Loans | Substandard | Commercial Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 43,924 | 54,160 |
Loans Excluding Acquired Impaired Loans | Substandard | Residential Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 3,120 | 4,447 |
Loans Excluding Acquired Impaired Loans | Substandard | Construction, Land Development, and Other Land |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Substandard | Commercial and Industrial |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 41,290 | 48,609 |
Loans Excluding Acquired Impaired Loans | Substandard | Paycheck Protection Program |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Substandard | Installment and Other |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 1 |
Loans Excluding Acquired Impaired Loans | Substandard | Lease Financing Receivables |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 786 | 955 |
Loans Excluding Acquired Impaired Loans | Doubtful |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 297 | 600 |
Loans Excluding Acquired Impaired Loans | Doubtful | Commercial Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Doubtful | Residential Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Doubtful | Construction, Land Development, and Other Land |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Doubtful | Commercial and Industrial |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Doubtful | Paycheck Protection Program |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Doubtful | Installment and Other |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Doubtful | Lease Financing Receivables |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 297 | 600 |
Loans Excluding Acquired Impaired Loans | Loss |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases |  | 0 |
Loans Excluding Acquired Impaired Loans | Loss | Commercial Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Loss | Residential Real Estate |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Loss | Construction, Land Development, and Other Land |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Loss | Commercial and Industrial |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Loss | Paycheck Protection Program |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Loans Excluding Acquired Impaired Loans | Loss | Installment and Other |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases | $ 0 | 0 |
Loans Excluding Acquired Impaired Loans | Loss | Lease Financing Receivables |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total loans and leases |  | $ 0 |

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