Investment Securities - Narrative (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) security state	Dec. 31, 2020 USD ($) security	Jun. 30, 2020 loan	Sep. 30, 2014 USD ($)
Debt Securities, Available-for-sale [Line Items]
Number of securities temporarily impaired (security) | security	163	50
Number of securities temporarily impaired for 12 months or more (security) | security	27	10
Period of temporary impairment	12 months	12 months
Amortized cost of securities transferred				$ 89,780,000
Fair value of securities transferred				89,757,000
Net unrealized gains (losses) on securities transferred				$ (15,000)
Net unrealized loss on securities transferred from available for sale to held to maturity	$ (87,000)	$ (133,000)
Number of states | state	6
Federal Home Loan Bank Stock	$ 4,328,000	9,508,000
Federal Reserve Bank Stock	1,037,000	1,037,000
Impairment losses	0
State and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Number of securities temporarily impaired (security) | loan			28
Proceeds from sale of held-to-maturity securities	8,600,000
Cumulative book value	8,332,000
Net realized gain from sale of municipal securities	268,000
Other equity securities
Debt Securities, Available-for-sale [Line Items]
Securities pledged as collateral	$ 347,456,000	$ 297,326,000