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Fair Value Measurements - Schedule of Estimated Fair Values (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Jun. 30, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | --- | --- | --- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Investment securities available for sale, at fair value | $ 215,369 |  | $ 276,138 |  |  |
Marketable equity securities | 8,534 |  | 7,945 |  |  |
Purchased receivables, net | 13,520 |  | 24,373 |  |  |
Servicing rights | 10,589 |  | 11,920 |  |  |
Mortgage servicing rights |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Servicing rights | 10,589 | $ 10,721 | 11,920 | $ 11,206 | $ 10,836 | $ 10,821
Commercial servicing rights |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Servicing rights | 1,286 |  | 1,214 |  |  |
Interest rate swaps |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative assets | 8,846 |  | 2,950 |  |  |
Derivative liabilities | 11,002 |  | 3,484 |  |  |
Interest rate lock commitments |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative assets | 6,519 |  | 810 |  |  |
Retail interest rate contracts |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative liabilities | 466 |  | 71 |  |  |
Level 1 inputs: |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Investment securities available for sale, at fair value | 59,865 |  | 75,456 |  |  |
Marketable equity securities | 8,534 |  | 7,945 |  |  |
Level 1 inputs: | Mortgage servicing rights |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Servicing rights | 0 |  | 0 |  |  |
Level 1 inputs: | Commercial servicing rights |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Servicing rights | 0 |  | 0 |  |  |
Level 1 inputs: | Interest rate swaps |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative assets | 0 |  | 0 |  |  |
Derivative liabilities | 0 |  | 0 |  |  |
Level 1 inputs: | Interest rate lock commitments |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative assets | 0 |  | 0 |  |  |
Level 1 inputs: | Retail interest rate contracts |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative liabilities | 0 |  | 0 |  |  |
Level 1 inputs: | Carrying Amount |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Cash, due from banks and deposits in other banks | 101,129 |  | 95,424 |  |  |
Investment securities available for sale, at fair value | 59,865 |  | 75,456 |  |  |
Marketable equity securities | 8,534 |  | 7,945 |  |  |
Level 1 inputs: | Fair Value |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Cash, due from banks and deposits in other banks | 101,129 |  | 95,424 |  |  |
Investment securities available for sale, at fair value | 59,865 |  | 75,456 |  |  |
Marketable equity securities | 8,534 |  | 7,945 |  |  |
Level 2 inputs: |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Investment securities available for sale, at fair value | 155,504 |  | 200,682 |  |  |
Marketable equity securities | 0 |  | 0 |  |  |
Level 2 inputs: | Mortgage servicing rights |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Servicing rights | 0 |  | 0 |  |  |
Level 2 inputs: | Commercial servicing rights |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Servicing rights | 0 |  | 0 |  |  |
Level 2 inputs: | Interest rate swaps |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative assets | 8,846 |  | 2,950 |  |  |
Derivative liabilities | 11,002 |  | 3,484 |  |  |
Level 2 inputs: | Interest rate lock commitments |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative assets | 0 |  | 0 |  |  |
Level 2 inputs: | Retail interest rate contracts |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative liabilities | 466 |  | 71 |  |  |
Level 2 inputs: | Carrying Amount |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Investment securities available for sale, at fair value | 155,504 |  | 200,682 |  |  |
Investment in Federal Home Loan Bank stock | 2,508 |  | 2,138 |  |  |
Accrued interest receivable | 8,024 |  | 4,512 |  |  |
Deposits | 1,806,133 |  | 1,372,351 |  |  |
Borrowings | 13,737 |  | 8,891 |  |  |
Accrued interest payable | 139 |  | 23 |  |  |
Level 2 inputs: | Carrying Amount | Interest rate swaps |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative assets | 8,846 |  | 2,950 |  |  |
Derivative liabilities | 11,002 |  | 3,484 |  |  |
Level 2 inputs: | Carrying Amount | Retail interest rate contracts |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative liabilities | 466 |  | 71 |  |  |
Level 2 inputs: | Fair Value |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Investment securities available for sale, at fair value | 155,504 |  | 200,682 |  |  |
Investment in Federal Home Loan Bank stock | 2,508 |  | 2,138 |  |  |
Accrued interest receivable | 8,024 |  | 4,512 |  |  |
Deposits | 1,808,534 |  | 1,373,647 |  |  |
Borrowings | 15,119 |  | 9,216 |  |  |
Accrued interest payable | 139 |  | 23 |  |  |
Level 2 inputs: | Fair Value | Interest rate swaps |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative assets | 8,846 |  | 2,950 |  |  |
Derivative liabilities | 11,002 |  | 3,484 |  |  |
Level 2 inputs: | Fair Value | Retail interest rate contracts |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative liabilities | 466 |  | 71 |  |  |
Level 3 inputs: |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Investment securities available for sale, at fair value | 0 |  | 0 |  |  |
Marketable equity securities | 0 |  | 0 |  |  |
Level 3 inputs: | Mortgage servicing rights |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Servicing rights | 10,589 |  | 11,920 |  |  |
Level 3 inputs: | Commercial servicing rights |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Servicing rights | 1,286 |  | 1,214 |  |  |
Level 3 inputs: | Interest rate swaps |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative assets | 0 |  | 0 |  |  |
Derivative liabilities | 0 |  | 0 |  |  |
Level 3 inputs: | Interest rate lock commitments |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative assets | 6,519 |  | 810 |  |  |
Level 3 inputs: | Retail interest rate contracts |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative liabilities | 0 |  | 0 |  |  |
Level 3 inputs: | Carrying Amount |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Loans and loans held for sale | 1,620,826 |  | 1,111,205 |  |  |
Purchased receivables, net | 13,520 |  | 24,373 |  |  |
Junior subordinated debentures | 10,310 |  | 10,310 |  |  |
Level 3 inputs: | Carrying Amount | Mortgage servicing rights |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Servicing rights | 10,589 |  | 11,920 |  |  |
Level 3 inputs: | Carrying Amount | Commercial servicing rights |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Servicing rights | 1,286 |  | 1,214 |  |  |
Level 3 inputs: | Carrying Amount | Interest rate lock commitments |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative assets | 6,519 |  | 810 |  |  |
Level 3 inputs: | Fair Value |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Loans and loans held for sale | 1,602,727 |  | 1,095,031 |  |  |
Purchased receivables, net | 13,520 |  | 24,373 |  |  |
Junior subordinated debentures | 10,610 |  | 11,000 |  |  |
Level 3 inputs: | Fair Value | Mortgage servicing rights |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Servicing rights | 10,589 |  | 11,920 |  |  |
Level 3 inputs: | Fair Value | Commercial servicing rights |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Servicing rights | 1,286 |  | 1,214 |  |  |
Level 3 inputs: | Fair Value | Interest rate lock commitments |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative assets | $ 6,519 |  | $ 810 |  |  |

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121558606&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121553693&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740 + Details
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