Investment Securities - Other information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($) security	Sep. 30, 2021 USD ($) security	Sep. 30, 2022 USD ($) security	Sep. 30, 2021 USD ($) security	Dec. 31, 2021 USD ($)
Investment holdings
Number of investment securities sold | security	1	4	1	14
Net gain (loss) on sale of investment securities	$ 5	$ 3	$ 5	$ 17
Number of securities either matured or called | security	0	3	2	10
Net gain (loss) on securities either matured or called		$ 0	$ 0	$ 5
Realized gain (loss) on equity securities	$ (75)	$ 9	(226)	$ (38)
Secured Credit
Investment holdings
Amortized cost	3		3		$ 4
Fair value	3		3		5
Secured Credit | Asset Pledged as Collateral
Investment holdings
Amortized cost	10,600		10,600		11,100
Fair value	$ 8,900		$ 8,900		$ 11,200