Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2012	Dec. 31, 2019
Proceeds from sale of common stock					$ 22,500,000
Net operating loss carry forwards	$ 22,579,000		$ 22,579,000
Carryforwards utilize limit before the stock offering closed			163,000
Unutilized operating loss carryforwards that will expire	20,520,000		20,520,000
Reduced deferred tax assets and valuation allowance	$ 6,977,000		$ 6,977,000
Deferred tax liability to be recorded						$ 473,000
Effective tax rate	20.70%	20.40%	20.70%	20.20%
Additional bad debt deductions			$ 2,250,000
Deferred tax asset, valuation allowance	$ 0		0
Deferred tax asset	1,600,000		1,600,000			1,700,000
Unrecognized tax benefits	$ 0		$ 0			$ 0
Minimum [Member]
Net operating loss carryforwards, expiration date			Jan. 01, 2024
Maximum [Member]
Net operating loss carryforwards, expiration date			Dec. 31, 2033