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ITG Acquisition - Assumption of Equity Compensation Plan (Details) - shares | Mar. 31, 2019 | Mar. 01, 2019
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Assumed Plan | Class A |  |
Business Acquisition [Line Items] |  |
Shares available for issuance | 1,230,406 | 2,497,028

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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