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Commitments and contingencies (Tables) | 9 Months Ended
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Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract] |
Summary of Financial instruments with Off-Balance Sheet Credit Risk |
|  | September 30, |  | December 31,
|  | 2020 |  |  | 2019 |
Commitments to extend credit, excluding interest rate lock commitments |  | $ | 1,819,070 |  |  | $ | 1,086,173 |
Letters of credit |  | 18,239 |  |  | 19,569 |
Balance at end of period |  | $ | 1,837,309 |  |  | $ | 1,105,742 |
Summary of Allowance of Credit Losses on Unfunded Commitments | The table below presents activity within the allowance for credit losses on unfunded commitments:
|  | For the Three Months Ended September 30, |  | For the Nine Months Ended September 30,
|  | 2020 |  |  | 2020 |
Balance at beginning of period |  | $ | 6,500 |  |  | $ | — |
Impact of CECL adoption on provision for credit losses on unfunded commitments |  | — |  |  | 2,947 |
Increase in allowance for credit losses from unfunded commitments acquired in business combination |  | 10,429 |  |  | 10,499 |
Provision for credit losses on unfunded commitments |  | (862) |  |  | 2,621 |
Balance at end of period |  | $ | 16,067 |  |  | $ | 16,067 |
Summary of Allowance for Loan Repurchases or Indemnifications | The following table summarizes the activity in the repurchase reserve:
|  | Three Months Ended September 30, |  | For the Nine Months Ended September 30,
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |  |  |
Balance at beginning of period |  | $ | 4,601 |  |  | $ | 3,407 |  |  | $ | 3,529 |  |  | $ | 3,273 |  |  |
Provision for loan repurchases or indemnifications |  | 901 |  |  | 107 |  |  | 2,128 |  |  | 255 |  |  |
Recoveries on previous losses |  | (44) |  |  | (79) |  |  | (199) |  |  | (93) |  |  |
Balance at end of period |  | $ | 5,458 |  |  | $ | 3,435 |  |  | $ | 5,458 |  |  | $ | 3,435 |  |  |

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- Definition Tabular disclosure of information about obligations resulting from other commitments. + References No definition available. + Details
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- Definition Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined) which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611 + Details
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