Investment Securities - Securities in a Gross Unrealized Loss Position - Positions (Details) - position	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
U.S Treasuries
Investment Securities
Number of positions	31	15
U.S. government and federal agencies
Investment Securities
Number of positions	50	40
Collateralized mortgage obligations
Investment Securities
Number of positions	52	35
Municipal Securities
Investment Securities
Number of positions	14	8
Corporate bonds
Investment Securities
Number of positions	3
Mortgage-backed
Investment Securities
Number of positions	218	75