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v3.20.2

Basis of Presentation (Details) $ in Thousands |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 01, 2020 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) subsidiary segment | Sep. 30, 2019 USD ($) | Dec. 31, 2019 USD ($) | Jan. 01, 2019 USD ($)
Basis of presentation |  |  |  |  |  |  |
Number of operating segments | segment |  |  |  | 1 |  |  |
Number of active operating bank subsidiaries | subsidiary |  |  |  | 5 |  |  |
Right-of-use asset amortization |  | $ 340 | $ 267 | $ 997 | $ 726 |  |
Retained earnings |  | $ 2,241,397 |  | $ 2,241,397 |  | $ 2,200,568 |
ASU 2016-02 | Adjusted Balance |  |  |  |  |  |  |
Basis of presentation |  |  |  |  |  |  |
Right-of-use asset |  |  |  |  |  |  | $ 6,400
Statement of Financial Position Location |  |  |  |  |  |  | us-gaap:OtherAssets
Lease liability |  |  |  |  |  |  | $ 6,400
Statement of Financial Position Location |  |  |  |  |  |  | us-gaap:OtherLiabilities
ASU 2016-13 | Adjustment |  |  |  |  |  |  |
Basis of presentation |  |  |  |  |  |  |
Percentage of allowance for loan losses | 17.20% |  |  |  |  |  |
Retained earnings | $ 8,300 |  |  |  |  |  |

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