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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands |  |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 27, 2019 | Sep. 27, 2019 | Sep. 17, 2018 | Dec. 31, 2012 | Sep. 30, 2020 | Dec. 31, 2019 | Sep. 30, 2019
Litigation Matters |  |  |  |  |  |  |  |
Restricted cash and cash equivalents | [1] |  |  |  |  | $ 0 |  | $ 10,015
Visa Inc. |  |  |  |  |  |  |  |
Litigation Matters |  |  |  |  |  |  |  |
Settlement agreement amount |  |  |  |  | $ 4,000,000 |  |  |
Damages sought amended value |  |  |  | $ 4,100,000 |  |  |  |
Loss contingency accrual, payments |  | $ 467,000 | $ 300,000 |  |  |  |  |
Restricted cash and cash equivalents |  |  |  |  |  | $ 1,100,000 |  |
Minimum |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Weighted average remaining term (in years) |  |  |  |  |  | 1 year |  |
Finance lease, initial contract terms (in years) |  |  |  |  |  | 3 years |  |
Maximum |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Weighted average remaining term (in years) |  |  |  |  |  | 12 years |  |
Finance lease, initial contract terms (in years) |  |  |  |  |  | 5 years |  |
Total commitments and standby letters of credit | Interest payable and other liabilities |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Allowance for off balance sheet commitments |  |  |  |  |  | $ 1,700 | $ 1,100 |
[1] | Restricted cash includes reserve requirements held with the Federal Reserve Bank of San Francisco. In response to the COVID-19 pandemic, the Federal Reserve reduced the reserve requirement ratios to zero percent effective March 26, 2020.

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