IndexMarketable Securities, Available-for-sale Securities, Policy [Policy Text Block] (Deprecated 2018-01-31)
| Name | MarketableSecuritiesAvailableForSaleSecuritiesPolicy |
|---|---|
| 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 |
Labels
| Text | Lang | Role | Container role |
|---|---|---|---|
| Marketable Securities, Available-for-sale 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 |
Related Parent Concepts
| 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 |