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Revenues from Contracts with Customers - Summary of Geographic Distribution of Revenue (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Revenues | $ 64,640 | $ 67,718 | $ 186,640 | $ 199,496
UNITED STATES |  |  |  |
Revenues | 34,018 | 42,030 | 105,517 | 127,799
JERSEY |  |  |  |
Revenues | 29,527 | 23,896 | 77,693 | 66,425
IRELAND |  |  |  |
Revenues | $ 1,095 | 1,164 | 3,065 | 3,491
CANADA |  |  |  |
Revenues |  | $ 628 | $ 365 | $ 1,781

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- Definition Revenues from operations, excluding interest and dividend income. Includes revenues from the following sources: investment banking (underwriting and financial advisory), principal transactions (sales and trading, and investment gains and losses), commissions, asset management, and investment advisory and other services. + References No definition available. + Details
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