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Non-marketable Securities - Carrying Balance (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Non-marketable Securities
Federal Reserve Bank stock	$ 24,062	$ 24,062
Federal Home Loan Bank stock	3,414	16,828
Convertible preferred stock	20,508	25,000
Equity method investments	25,003	24,587
Total	$ 72,987	$ 90,477

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- Definition

Disclosure - Non-Marketable Securities (Narrative) [Abstract]

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Total non-marketable securities, including FHLB stock, FRB stock, equity method investments and preferred stock.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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-Topic 323
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-Name Accounting Standards Codification
-Section 45
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481664/323-10-45-1

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-Topic 323
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
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-Section S99
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Amount of investment in equity security without readily determinable fair value.

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-Topic 321
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-Section 50
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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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-Topic 942
-SubTopic 325
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-Section 45
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Federal Reserve Bank stock represents an equity interest in the Federal Reserve Bank. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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