| Name | CertainLoansAcquiredInTransferAccountedForAsAvailableforsaleDebtSecuritiesOtherthanTemporaryImpairmentChargesCreditLoss |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:monetaryItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | debit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Amount of expense to write-down the amortized cost basis of loans, after acquisition, to fair value when the decline in the fair value is determined to be other than temporary (OTTI) for loans accounted for as available-for-sale debt securities. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Certain Loans Acquired in Transfer Accounted for as Available-for-sale Debt Securities, Other-than-Temporary Impairment Charges, Credit Loss | en-US | http://www.xbrl.org/2003/role/label | 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 | 35 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Paragraph | 34D | http://fasb.org/us-gaap/role/ref/legacyRef |
| URI | http://asc.fasb.org/extlink&oid=121568769&loc=SL6284304-111560 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Publisher | FASB | http://fasb.org/us-gaap/role/ref/legacyRef |
| Name | Accounting Standards Codification | http://fasb.org/us-gaap/role/ref/legacyRef |
| Topic | 310 | http://fasb.org/us-gaap/role/ref/legacyRef |
| SubTopic | 30 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Section | 35 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Paragraph | 8 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Subparagraph | (a) | http://fasb.org/us-gaap/role/ref/legacyRef |
| URI | http://asc.fasb.org/extlink&oid=121574911&loc=d3e14665-111541 | http://fasb.org/us-gaap/role/ref/legacyRef |