Employee Benefit Plans, Restricted Stock Plan (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Unvested Shares [Roll Forward]
Vested (in shares)	(89)	(61)
Restricted Stock [Member]
Deferred Compensation Arrangements [Abstract]
Number of shares authorized (in shares)	150,000
Number of shares available for grant (in shares)	116,058
Unvested Shares [Roll Forward]
Outstanding, beginning of period (in shares)	6,622
Granted (in shares)	0
Forfeited (in shares)	(161)
Vested (in shares)	(89)
Outstanding, end of period (in shares)	6,372
Weighted Average Market Price [Roll Forward]
Outstanding, beginning of period (in dollars per share)	$ 63.63
Granted (in dollars per share)	0
Forfeited (in dollars per share)	(63.13)
Vested (in dollars per share)	(59.06)
Outstanding, end of period (in dollars per share)	$ 63.71
Additional General Disclosures [Abstract]
Share-based compensation expense	$ 65,000	$ 77,000
Compensation cost related to nonvested awards that has not yet been recognized	$ 406,000
Period over which compensation cost is expected to be recognized	3 years