| Name | HeldToMaturitySecuritiesTransferredSecurityDerivativeHedgeGainLoss |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:monetaryItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | credit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| This item represents the net gain (loss) in accumulated other comprehensive income (a separate component of shareholders' equity) for any derivative that hedged the forecasted acquisition of the held-to-maturity security transferred to another category of investments in debt and equity securities (trading or available-for-sale). | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Held-to-maturity Securities, Transferred Security, Derivative Hedge, Gain (Loss) (Deprecated 2018-01-31) | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |