Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income taxes
Deferred Tax Assets Tax Deferred Compensation Noncurrent	$ 1,313,000				$ 1,270,000				$ 1,313,000	$ 1,270,000
Income tax expense (benefit)	1,450,000	$ 1,295,000	$ 1,575,000	$ 480,000	1,230,000	$ 1,375,000	$ 1,325,000	$ 330,000	4,800,000	4,260,000	$ 705,000
Income Tax Examination, Penalties and Interest Accrued	0				0				$ 0	$ 0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent									34.30%	27.60%
Deferred compensation cost		$ 3,800,000
Income Tax Examination, Penalties and Interest Expense											$ 600
Deferred tax asset, valuation allowance	0				0				$ 0	$ 0
Unrecognized tax benefits, income tax penalties accrued	$ 0				$ 0				$ 0	$ 0