Income Taxes Reconciliation of unrecognized tax benefits (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Unrecognized Tax Benefits, Beginning Balance	$ 633,000	$ 954,000	$ 1,226,000
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	10,000	12,000	12,000
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	0	0	2,000
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	0	0	3,000
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	304,000	333,000	283,000
Unrecognized Tax Benefits, Ending Balance	339,000	633,000	954,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	300,000	600,000	900,000
Income Tax Examination, Penalties and Interest Expense	45,500	35,000	7,500
Income Tax Examination, Penalties and Interest Accrued	$ 65,500	$ 111,000	$ 146,000