| Name | AlternativeExcessNetCapital |
|---|---|
| Namespace | http://fasb.org/srt/2021-01-31 |
| 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, Excess Net Capital, Alternative Standard | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Broker-Dealer, Excess Net Capital, Alternative Standard, Total | en-US | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Amount of net capital in excess of minimum required net capital, calculated under Alternative Standard. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| elementCreationTaxonomyVersion | 2008 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| 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 | The amount of net capital in excess of the alternative minimum required net capital. | 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:AlternativeExcessNetCapitalAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBrokersAndDealers | |
srt:NetCapital | summation-item | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBrokersAndDealersCalc3 |