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Regulatory Capital Requirements | 12 Months Ended
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Dec. 31, 2018
Tradeweb Markets LLC |
Entity Information [Line Items] |
Regulatory Capital Requirements | 19. Regulatory Capital Requirements TWL, DW and TWD are subject to the Uniform Net Capital Rule 15c3-1 under the Securities Exchange Act of 1934. TEL is subject to certain financial resource requirements with the FCA in the UK and TWJ are subject to certain financial resource requirements with the FCA in Japan. At December 31, 2018 and December 31, 2017, the regulatory capital requirements and regulatory capital for TWL, DW, TWD, TEL and TWJ were as follows (in thousands):
Predecessor |  | TWL |  | DW |  | TWD |  | TEL |  | TWJ |
As of December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Capital |  | $ | 22,551 |  | $ | 35,546 |  | $ | 16,965 |  | $ | 31,509 |  | $ | 5,326 |
Regulatory Capital Requirement |  |  | 1,589 |  |  | 1,612 |  |  | 378 |  |  | 18,034 |  |  | 961 |
Excess Regulatory Capital |  | $ | 20,962 |  | $ | 33,934 |  | $ | 16,587 |  | $ | 13,475 |  | $ | 4,365 |
Successor |  | TWL |  | DW |  | TWD |  | TEL |  | TWJ
As of December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Capital |  | $ | 18,986 |  | $ | 41,164 |  | $ | 24,042 |  | $ | 46,157 |  | $ | 10,592
Regulatory Capital Requirement |  |  | 2,698 |  |  | 1,803 |  |  | 599 |  |  | 17,493 |  |  | 3,413
Excess Regulatory Capital |  | $ | 16,288 |  | $ | 39,361 |  | $ | 23,443 |  | $ | 28,664 |  | $ | 7,179
As SEFs, TW SEF and DW SEF are required to maintain adequate financial resources and liquid financial assets in accordance with CFTC regulations. The required and maintained financial resources and liquid financial assets at December 31, 2018 and December 31, 2017 are as follows (in thousands):
|  | Successor |  | Predecessor
|  | As of December 31, 2018 |  | As of December 31, 2017
|  | TW SEF |  | DW SEF |  | TW SEF |  | DW SEF
Financial Resources |  | $ | 31,232 |  | $ | 17,837 |  | $ | 23,349 |  | $ | 20,069
Required Financial Resources |  |  | 10,500 |  |  | 5,169 |  |  | 10,500 |  |  | 5,875
Excess Financial Resources |  | $ | 20,732 |  | $ | 12,668 |  | $ | 12,849 |  | $ | 14,194
Liquid Financial Assets |  | $ | 16,662 |  | $ | 11,888 |  | $ | 14,084 |  | $ | 13,865
Required Liquid Financial Assets |  |  | 5,250 |  |  | 2,585 |  |  | 5,250 |  |  | 2,893
Excess Liquid Financial Assets |  | $ | 11,412 |  | $ | 9,303 |  | $ | 8,834 |  | $ | 10,972

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