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Securities - Narrative (Details) $ in Thousands		3 Months Ended			9 Months Ended		12 Months Ended
	Jun. 10, 2022 USD ($) agreement	Sep. 30, 2023 USD ($) security	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) security investment	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) investment	Mar. 31, 2022 USD ($)	Oct. 17, 2019 USD ($)
Debt Securities, Available-for-sale [Line Items]
Securities - equity investments with readily determinable fair values		$ 4,289			$ 4,289		$ 5,191
Equity Securities without readily determinable fair value, carrying value		65,975			65,975		49,182
Equity securities without readily determinable fair value, upward price adjustment, annual amount		0	$ 0		0	$ 10,163
Accrued interest		5,036			5,036		$ 2,593
Debt securities, available-for-sale, accrued interest writeoff		$ 0	$ 0		$ 0	$ 0
Number of securities in an unrealized loss position | security		116			116
Number of investments | investment					3		3
Held-to-maturity securities classified as nonaccrual		$ 4,772			$ 4,772
Asset Pledged as Collateral
Debt Securities, Available-for-sale [Line Items]
Debt securities		41,520			41,520		$ 93,813
Trax
Debt Securities, Available-for-sale [Line Items]
Equity Securities without readily determinable fair value, carrying value									$ 9,700
WSI
Debt Securities, Available-for-sale [Line Items]
Equity Securities without readily determinable fair value, carrying value		38,088			38,088		38,088
Equity method investments and warrants									$ 8,000
Equity method investment, ownership percentage									8.00%
Equity method investment, ownership percentage to be purchased through exercise of warrant									10.00%
Number of agreements with affiliate | agreement	2
Equity method investment, loss on impairment of warrants				$ 3,224
Equity securities without readily determinable fair value, percentage of common stock agreed to purchase	10.00%
Payment to acquire interest in common stock	$ 23,000
Equity securities without readily determinable fair value, percentage of ownership after transaction	18.00%
Equity method investments, fair value disclosure								$ 4,925
Equity securities without readily determinable fair value, discontinuation of equity method, amount after adjustment								$ 15,088
Equity securities without readily determinable fair value, upward price adjustment, annual amount				$ 10,163
Mutual fund
Debt Securities, Available-for-sale [Line Items]
Securities - equity investments with readily determinable fair values		$ 4,289			$ 4,289		$ 5,191

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