Current Accounting Developments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Jan. 01, 2022	Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for loan and lease losses	$ 22,530,000		$ 14,256,000
Retained earnings	227,445,000		234,410,000
Investment securities available for sale	1,025,032,000		973,314,000
Accrued interest receivable	6,700,000		6,800,000
Accrued interest reversed against interest income	0
Other Assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accrued interest receivable	6,700,000
Other Assets [Member] | Available-for-sale Securities [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accrued interest receivable	$ 4,800,000
Cumulative Effect, Period of Adoption, Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings			$ (7,315,000)
Accounting Standards Update 2016-13 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2022
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for loan and lease losses		$ 9,500,000
Off balance sheet credit loss		900,000
Retained earnings		7,300,000
Investment securities available for sale		$ 0