Investment Securities - Narrative (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2022 USD ($) security	Dec. 31, 2022 USD ($) security	Jun. 30, 2023 USD ($) company bond state security		Sep. 30, 2014 USD ($)
Debt Securities, Available-for-sale [Line Items]
AFS allowance			$ 0
HTM allowance for credit losses	$ 0	$ 0	428,000	[1]
Amortized cost	$ 379,693,000	$ 393,896,000	$ 390,415,000
Number of securities temporarily impaired (security) | security	773	869	869
Number of securities temporarily impaired for twelve months or more (security) | security	83	300
Period of temporary impairment	12 months	12 months
Financing receivable, threshold period past due			30 days
Debt securities, held-to-maturity, nonaccrual			$ 0
Amortized cost of securities transferred					$ 89,780,000
Fair value of securities transferred					89,757,000
Net unrealized loss, net of taxes on transferred securities					$ 15,000
Unamortized balance of net unrealized losses transferred	$ 73,000	$ 64,000	$ 59,000
Number of states | state			6
FHLB stock investment	3,683,000	2,846,000	$ 4,190,000
Federal reserve bank stock	1,037,000	1,037,000	1,037,000
Impairment losses			0
Other equity securities
Debt Securities, Available-for-sale [Line Items]
Securities pledged as collateral	318,833,000	350,411,000	329,615,000
Agency and mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
HTM allowance for credit losses			$ 0
Municipal Bonds
Debt Securities, Available-for-sale [Line Items]
Number of private activity bonds | bond			2
Amortized cost			$ 19,877,000
Corporate securities
Debt Securities, Available-for-sale [Line Items]
HTM allowance for credit losses		0	204,000
Amortized cost	27,750,000	34,750,000	$ 34,750,000
Number of individual companies | company			13
U.S. Government-sponsored agencies
Debt Securities, Available-for-sale [Line Items]
HTM allowance for credit losses			$ 0
Amortized cost	$ 38,100,000	$ 40,100,000	$ 40,100,000

[1] December 31, 2022 and June 30, 2022 had no allowance for credit losses