| Name | MarketableSecuritiesTradingSecuritiesPolicy |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | nonnum:textBlockItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Marketable Securities, Trading Securities, Policy [Policy Text Block] (Deprecated 2018-01-31) | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Disclosure of accounting policy for investments in debt and equity securities that are classified as trading securities. This policy also may describe the entity's accounting treatment for transfers between investment categories and how the fair values of such securities are determined. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| SourceName | Financial Instruments-Recognition and Measurement | http://fasb.org/srt/role/changeNote/changeNote |
| TaxonomyVersion | 2018 | http://fasb.org/srt/role/changeNote/changeNote |
| ChangeDate | 2017-08 | http://fasb.org/srt/role/changeNote/changeNote |
| ElementDeprecated | true | http://fasb.org/srt/role/changeNote/changeNote |
| Source_ASU_Number | 2016-01 | http://fasb.org/srt/role/changeNote/changeNote |
| DeprecatedDate | 2018-01-31 | http://fasb.org/srt/role/changeNote/changeNote |
| DeprecatedLabel | Element was deprecated and replaced with a more encompassing element. | http://fasb.org/srt/role/changeNote/changeNote |
| DeprecationReplacement | MarketableSecuritiesPolicy | http://fasb.org/srt/role/changeNote/changeNote |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:DeprecatedItems | parent-child | http://fasb.org/us-gaap/role/deprecated/deprecated | |
us-gaap:MarketableSecuritiesPolicy | dep-aggregateConcept-deprecatedPartConcept | http://fasb.org/us-gaap/role/deprecated/deprecated |