Securities - Held-to-Maturity, Allowance for Credit Losses (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 168
Debt securities, held-to-maturity, allowance for credit loss	160
Provision for credit losses	2,992
Recoveries credited to the allowance	0
Securities HTM charged against the allowance	(3,000)
Balance at end of period	160
Private label mortgage-backed
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	1
Debt securities, held-to-maturity, allowance for credit loss	1
Provision for credit losses	0
Recoveries credited to the allowance	0
Securities HTM charged against the allowance	0
Balance at end of period	1
Obligations of states and political subdivisions
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	39
Debt securities, held-to-maturity, allowance for credit loss	39
Provision for credit losses	0
Recoveries credited to the allowance	0
Securities HTM charged against the allowance	0
Balance at end of period	39
Corporate
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	123
Debt securities, held-to-maturity, allowance for credit loss	116
Provision for credit losses	2,993
Recoveries credited to the allowance	0
Securities HTM charged against the allowance	(3,000)
Balance at end of period	116
Trust preferred
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	5
Debt securities, held-to-maturity, allowance for credit loss	4
Provision for credit losses	(1)
Recoveries credited to the allowance	0
Securities HTM charged against the allowance	0
Balance at end of period	$ 4