| Name | HeldtomaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherGeographicConcentration |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:stringItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Geographic Concentration | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| This item represents a discussion of the geographic concentration of the underlying assets in the security which was considered as one of the potential factors in reaching a conclusion that the held-to-maturity investments are not other-than-temporarily impaired. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| Publisher | FASB | http://fasb.org/us-gaap/role/ref/legacyRef |
| Name | Accounting Standards Codification | http://fasb.org/us-gaap/role/ref/legacyRef |
| Topic | 320 | http://fasb.org/us-gaap/role/ref/legacyRef |
| SubTopic | 10 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Section | 50 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Paragraph | 6 | http://fasb.org/us-gaap/role/ref/legacyRef |
| URI | http://asc.fasb.org/extlink&oid=121645371&loc=d3e27290-111563 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureOther | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities | |
us-gaap:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureOther | domain-member | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfHeldToMaturitySecuritiesTable |