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v3.19.3.a.u2

Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) |  |  | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2019 | Feb. 06, 2017 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Accounting Policies [Line Items] |  |  |  |  |
FDIC indemnification asset termination, cash paid |  | $ 10,100,000 |  |  |
FDIC indemnification asset, termination benefit |  | $ 1,400,000 |  |  |
Held-to-maturity, Amortized cost |  |  |  | $ 424,740,000 |
Fair Value Assets Level 1 To Level 2 Transfers Amount | $ 0 |  | $ 0 | 0 | $ 0
Fair Value Assets Level 2 To Level 1 Transfers Amount | 0 |  | 0 | 0 | 0
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net |  |  | 0 | 0 | $ 0
Goodwill Impairment Loss |  |  | 0 | $ 0 |
Scotiabank Of Puerto Rico [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Aggregate purchase price | 550,000,000 |  | 550,000,000 |  |
US Virgin Island [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Premium on deposits | $ 10,000,000 |  | $ 10,000,000 |  |

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