Retirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Retirement Benefits [Abstract]
Automatic Annual Contribution Employees Hired Before January 1, 2009 Benefit Reduction Under Certain Amendments Minimum, percent			5.00%
Automatic Annual Contribution Employees Hired Before January 1, 2009 Due Benefit Reduction Under Certain Amendments Maximum, percent			7.00%
Employer's matching contribution to 401(k) of employees hired on or after January 1, 2009, percent			50.00%
Maximum annual contribution per employee, percent			3.00%
Funding and administrative costs of noncontributory defined benefit retirement plan and 401(k) plan [Abstract]
401(k) plan	$ 157	$ 152	$ 337	$ 312
Qualified noncontributory defined benefit retirement plan [Member]
Funding and administrative costs of noncontributory defined benefit retirement plan and 401(k) plan [Abstract]
Qualified noncontributory defined benefit retirement plan	308	282	616	561
Components of net periodic pension cost [Abstract]
Interest cost	14	13	26	26
Amortization of unrecognized net loss	2	2	4	4
Net periodic pension cost	16	15	30	30
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax [Abstract]
Net actuarial gain	$ (2)	$ (2)	$ (3)	$ (3)