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Stockholders' Equity (Expense Related to Options Revalued) (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation |  | $ 436,691 | $ 872,177 | $ 263,396
Accelerated Share-Based Compensation Summary [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of options | 153,940 |  |  |
Share-based compensation | $ 134,000 |  |  |
Accelerated Share-Based Compensation Summary [Member] | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of options | 153,940 |  |  |
Accelerated Share-Based Compensation Summary [Member] | Grant Date 1/11/2011 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of options | 16,667 |  |  |
Accelerated Share-Based Compensation Summary [Member] | Grant Date 1/20/2014 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of options | 6,667 |  |  |
Accelerated Share-Based Compensation Summary [Member] | Grant Date 2/27/2018 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of options | 60,606 |  |  |
Accelerated Share-Based Compensation Summary [Member] | Grant Date 4/21/2017 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of options | 20,000 |  |  |
Accelerated Share-Based Compensation Summary [Member] | Grant Date 4/30/2019 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of options | 50,000 |  |  |
Previously recognized expense | Accelerated Share-Based Compensation Summary [Member] | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | $ 414,018 |  |  |
Previously recognized expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 1/11/2011 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 109,769 |  |  |
Previously recognized expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 1/20/2014 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 120,712 |  |  |
Previously recognized expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 2/27/2018 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 99,738 |  |  |
Previously recognized expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 4/21/2017 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 70,346 |  |  |
Previously recognized expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 4/30/2019 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 13,453 |  |  |
Accelerated vesting expense | Accelerated Share-Based Compensation Summary [Member] | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 87,783 |  |  |
Accelerated vesting expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 4/21/2017 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 20,736 |  |  |
Accelerated vesting expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 4/30/2019 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 67,047 |  |  |
Incremental vesting expense | Accelerated Share-Based Compensation Summary [Member] | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 46,475 |  |  |
Incremental vesting expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 1/11/2011 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 11,782 |  |  |
Incremental vesting expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 1/20/2014 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 7,621 |  |  |
Incremental vesting expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 2/27/2018 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 12,313 |  |  |
Incremental vesting expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 4/21/2017 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 13,485 |  |  |
Incremental vesting expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 4/30/2019 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 1,274 |  |  |
Total of previous, accelerated and incremental expense | Accelerated Share-Based Compensation Summary [Member] | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 548,276 |  |  |
Total of previous, accelerated and incremental expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 1/11/2011 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 121,551 |  |  |
Total of previous, accelerated and incremental expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 1/20/2014 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 128,333 |  |  |
Total of previous, accelerated and incremental expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 2/27/2018 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 112,051 |  |  |
Total of previous, accelerated and incremental expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 4/21/2017 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | 104,567 |  |  |
Total of previous, accelerated and incremental expense | Accelerated Share-Based Compensation Summary [Member] | Grant Date 4/30/2019 | Chief Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation | $ 81,774 |  |  |

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