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Loans and Allowance for Credit Losses on Loans - Schedule of Loans by Class (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Loans at amortized cost | $ 2,317,019 |  | $ 2,088,556
Allowance for credit losses on loans | (22,414) | $ (19,100) | (22,874)
Total loans, net | 2,294,605 |  | 2,065,682
Deferred loan fees | (2,900) |  | (4,900)
Unrecognized purchase discounts on non-PCI loans | 2,834 |  | 815
Financing receivable, accrued interest, net | 7,700 |  | 8,800
Commercial loans | Commercial and industrial |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Loans at amortized cost | 377,965 |  | 498,408
Allowance for credit losses on loans | (2,124) | (1,590) | (2,530)
Commercial real estate loans | Commercial owner-occupied |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Loans at amortized cost | 398,543 |  | 304,963
Allowance for credit losses on loans | (2,566) | (2,037) | (2,778)
Commercial real estate loans | Commercial investor-owned |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Loans at amortized cost | 1,157,344 |  | 961,208
Allowance for credit losses on loans | (12,305) | (10,761) | (12,682)
Commercial real estate loans | Construction |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Loans at amortized cost | 125,060 |  | 73,046
Allowance for credit losses on loans | (1,227) | (1,142) | (1,557)
Residential loans | Home equity |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Loans at amortized cost | 92,396 |  | 104,813
Allowance for credit losses on loans | (659) | (412) | (738)
Residential loans | Other residential |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Loans at amortized cost | 117,778 |  | 123,395
Allowance for credit losses on loans | (623) | (613) | (998)
Consumer loans | Installment and other consumer loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Loans at amortized cost | 47,933 |  | 22,723
Allowance for credit losses on loans | $ (622) | $ (238) | $ (291)

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