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Loans and Allowance for Credit Losses on Loans - CARES Act Narrative (Details) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2021 USD ($) loan | Dec. 31, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans at amortized cost | $ 2,002,767 | $ 2,088,556
SBA PPP |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of loans | loan | 1,532 |
SBA PPP Round Two |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of loans funded during period | loan | 1,060 |
Commercial loans | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans at amortized cost | $ 423,646 | 498,408
Commercial loans | Commercial and industrial | SBA PPP |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans at amortized cost | 248,300 | 291,600
Financing receivable, unamortized loan fee | 6,500 | $ 5,400
Commercial loans | Commercial and industrial | SBA PPP Round Two |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Increase in finance receivables | $ 136,000 |

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