Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Future federal statutory tax rate	21.00%	21.00%
Increase (decrease) in Valuation Allowance	$ (312,000)	$ 198,000
Estimated NOL Carry-forward	10,483,000	$ 7,839,000
R&D credits	$ 379,000
Maximum [Member]
Operating Loss Carryforwards [Line Items]
NOL and tax credit expiration dates	Dec. 31, 2037