Income Taxes - Additional Information (10K Only) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Line Items]
Income Tax Expense (Benefit)	$ 1,162,000	$ 1,782,000
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	3,386,000	4,885,000
Uncertain tax positions	$ 0	$ 0
Effective tax rate	34.90%	34.60%
Federal statutory income tax rate	21.00%
Tax Cuts And Jobs Act Of 2017, change in deferred income tax provision		$ (2,300,000)
Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Increase (Decrease) in Regulatory Assets		$ 1,300,000
Federal
Income Taxes [Line Items]
Net operating loss carryforwards	$ 2,200,000