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Shareholders' Equity (Narrative) (Details) - USD ($)	12 Months Ended
Shareholders' Equity (Narrative) (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Jul. 05, 2019	Jun. 28, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock from treasury, shares	0
Issuance of common stock from treasury	$ 110,541	$ 75,750
Dividends declared or paid	$ 0	$ 0
Subordinated debt, warrants of common stock issued			10,000	90,000
Warrants exercisable period	3 years
Subordinated promissory notes, exercise price of warrants			$ 2.90	$ 2.90
Number of warrants expired	70,000
Options outstanding	331,165	393,500
Number of options, granted in period	45,000	195,000
Unrecognized stock based compensation expense	$ 166,820
Unrecognized stock based compensation expense, recognition period	2 years 7 months 2 days
Weighted average grant date fair value	$ 0.44
Stock Options And Non-Cash Issuance Of Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 70,133	$ 56,168
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance	15,000
Share Price	$ 3.20
Options outstanding	15,000
Number of options, granted in period	21,667
Share-based compensation expense	$ 38,583
Unrecognized stock based compensation expense, recognition period	2 months 12 days
First Anniversary [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
The 2010 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock from treasury, shares	22,181	21,734
Issuance of common stock from treasury	$ 55,791	$ 75,750
Shares authorized for issuance	500,000
Options outstanding	293,665
Number of options, granted in period	7,500
The 2010 Plan [Member] \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual Term	10 years
Vesting period	5 years
The 2010 Plan [Member] \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
2019 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock from treasury, shares	23,420
Issuance of common stock from treasury	$ 54,750
Shares authorized for issuance	500,000
Options outstanding	37,500
Shares available for future grants	439,080
2019 Plan [Member] \| Greater Than 10% Stockholders [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
2019 Plan [Member] \| Less Than 10% Stockholders [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	10 years
Treasury Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock from treasury, shares	45,601	21,734
Issuance of common stock from treasury	$ 124,435	$ 59,308
Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock from treasury, shares	0	0