Investment Securities - Held-To-Maturity Allowance For Credit Loss (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 1,600,000	$ 0	$ 0	$ 0
Provision for credit loss expense	0	0	1,600,000	0
Ending balance of allowance for credit losses	$ 1,600,000	$ 0	$ 1,600,000	$ 0