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v3.20.1

Non Purchased Loans - Narrative (Details) | 2 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Apr. 30, 2020 USD ($) loan | Mar. 31, 2020 USD ($) loan | Mar. 31, 2019 USD ($) loan | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Loans and Allowance for Loan Losses (Additional Textual) [Abstract] |  |  |  |  |
Allowance for loan losses attributable to restructured loans |  | $ 120,185,000 | $ 49,835,000 | $ 52,162,000 | $ 49,026,000
Non purchased loans and leases |  |  |  |  |
Loans and Allowance for Loan Losses (Additional Textual) [Abstract] |  |  |  |  |
Mortgage and commercial loans discontinued past due period |  | 90 days |  |  |
Consumer and other retail loans charged-off past due period |  | 120 days |  |  |
Interest income |  | $ 21,000 |  |  |
Troubled debt restructured |  | $ 0 |  |  |
Nonperforming loans charged-off past due period |  | 90 days |  |  |
Number of restructured loans | loan |  | 2 | 0 |  |
Restructured loans discontinued past due period |  | 90 days | 90 days |  |
Remaining availability under commitments to lend additional funds on restructured loans |  | $ 0 | $ 44,000 |  |
Deferral period |  | 90 days |  |  |
Number of loan modifications | loan |  | 5 |  |  |
Modified loans, balance |  | $ 1,345,000 |  |  |
Non purchased loans and leases | Subsequent Event |  |  |  |  |
Loans and Allowance for Loan Losses (Additional Textual) [Abstract] |  |  |  |  |
Number of loan modifications | loan | 2,900 |  |  |  |
Modified loans, balance | $ 1,285,000,000 |  |  |  |
Non purchased loans and leases | Nonaccruing Loans |  |  |  |  |
Loans and Allowance for Loan Losses (Additional Textual) [Abstract] |  |  |  |  |
Outstanding balance of restructured loans |  | 164,000 |  |  |
Non purchased loans and leases | Restructured loans |  |  |  |  |
Loans and Allowance for Loan Losses (Additional Textual) [Abstract] |  |  |  |  |
Outstanding balance of restructured loans |  | 2,596,000 | 2,976,000 |  |
Allowance for loan losses attributable to restructured loans |  | $ 193,000 | $ 32,000 |  |

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