Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2012	Dec. 31, 2019
Proceeds from sale of common stock			$ 22,500,000
Net operating loss carry forwards	$ 22,579,000
Carryforwards utilize limit before the stock offering closed	163,000
Unutilized operating loss carryforwards that will expire	20,520,000
Reduced deferred tax assets and valuation allowance	$ 6,977,000
Deferred tax liability to be recorded				$ 473,000
Effective tax rate	20.50%	20.00%
Additional bad debt deductions	$ 2,250,000
Deferred tax asset, valuation allowance	0
Deferred tax asset	1,600,000			1,700,000
Unrecognized tax benefits	$ 0			$ 0
Minimum [Member]
Net operating loss carryforwards, expiration date	Jan. 01, 2024
Maximum [Member]
Net operating loss carryforwards, expiration date	Dec. 31, 2033