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Investment Securities - Visa Class B Restricted Shares (Details) - Visa $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2019 USD ($) shares | Dec. 31, 2018 USD ($)
Common Class A |  |
Securities |  |
Investment shares owned, if converted | 11,285 |
Common Class B |  |
Securities |  |
Conversion ratio | 1.6298 |
Investment shares owned | 6,924 |
Cost basis | $ | $ 0 | $ 0

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