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Investment securities - Equity Securities Portfolio (Details) $ in Thousands	Sep. 30, 2021 USD ($) security	Dec. 31, 2020 USD ($)
Investment Securities
Number of equity securities portfolio consisting of stock of other financial institutions | security	1
Equity investments carried at fair value	$ 147	$ 138
Fair value of equity portfolio in excess of cost basis	6
Common equity securities.
Investment Securities
Equity investments carried at fair value	$ 147	$ 138

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- Definition

The amount the fair value of the equity portfolio exceeded the cost basis.

+ References

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- Definition

The number of equity securities portfolio consisting of stock of other financial institutions.

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- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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