Regulatory Matters (Narrative) (Details) $ in Millions		1 Months Ended			12 Months Ended
	Jan. 01, 2020 USD ($)	Mar. 31, 2021 shares	Feb. 28, 2021 shares	Oct. 31, 2020 shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2022	Dec. 31, 2019 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 ("CETI") capital ratio					0.045	0.045
Minimum Tier 1 capital to risk-weighted assets ratio					0.060	0.060
Minimum total capital to risk-weighted assets ratio					0.080	0.080
Minimum Tier 1 leverage ratio					0.040	0.040
CETI capital ratio					0.065	0.065
Tier 1 ratio					0.080	0.080
Total risk based capital ratio					0.10	0.100
Tier 1 leverage ratio					5.00%
Capital conservation buffer					2.50%
CBLR leverage ratio					8.50%
Dividends | $					$ 16.1	$ 12.1		$ 10.7
Growth Act [Member] | Minimum [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer	9.00%
Growth Act [Member] | Maximum [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CBLR total consolidated assets | $	$ 10,000.0
Forecast [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CBLR leverage ratio							9.00%
Common Stock [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Repurchase of common stock (in shares)					1,240,304	724,741
Repurchase Program [Member] | Common Stock [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Plan to repurchase (in shares)		1,400,000		1,000,000
Repurchase of common stock (in shares)			1,000,000		1,240,304