Income Taxes, Continuing Operations - Summary of Income Tax Expense (Benefit) from Continuing Operations (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Current:
Federal	$ 489,000	$ 598,000
State	188,000	212,000
Total	677,000	810,000
Deferred:
Federal	20,000	(57,000)
State	8,000	(19,000)
Total	28,000	(76,000)
Total Income tax expense	$ 705,000	$ 734,000