| Name | AlternativeNetCapitalRequirement1 |
|---|---|
| Namespace | http://fasb.org/srt/2020-01-31 |
| Prefix | srt |
| Data type | xbrli:monetaryItemType |
| Period type | instant |
| Substitution Group | xbrli:item |
| Balance | credit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Broker-Dealer, Minimum Net Capital Required, Alternative Standard | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Broker-Dealer, Minimum Net Capital Required, Alternative Standard, Total | en-US | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Minimum amount of net capital of broker-dealer and its subsidiary, calculated under Alternative Standard. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| SourceName | Taxonomy Technical Improvement | http://fasb.org/srt/role/changeNote/changeNote |
| TaxonomyVersion | 2019 | http://fasb.org/srt/role/changeNote/changeNote |
| ChangeDate | 2018-10 | http://fasb.org/srt/role/changeNote/changeNote |
| ModifiedLabels | true | http://fasb.org/srt/role/changeNote/changeNote |
| ModifiedDocumentation | true | http://fasb.org/srt/role/changeNote/changeNote |
| PreviousDocumentation | Amount of net capital requirement computed under the alternative method allowed under regulatory reporting requirements. | http://fasb.org/srt/role/changeNote/changeNote |
| Publisher | SEC | http://www.xbrl.org/2009/role/commonPracticeRef |
| Name | Rule 15c3-1 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Number | 240 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Section | 15c3-1 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Name | Relation Type | Role | |
|---|---|---|---|
srt:TwoPercentOfDebitItems | summation-item | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBrokersAndDealersCalc3 | |
srt:CapitalRequirementOfConsolidatedBrokerDealerSubsidiaryElectingAlternativeMethod | summation-item | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBrokersAndDealersCalc3 |
| Name | Relation Type | Role | |
|---|---|---|---|
srt:AlternativeNetCapitalRequirementAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBrokersAndDealers | |
srt:NetCapital | summation-item | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBrokersAndDealersCalc3 |