Commitments and Contingencies (Narrative) (Details) - USD ($)	1 Months Ended
	Aug. 31, 2014	Nov. 11, 2008	Mar. 31, 2021	Dec. 31, 2020
Commitments and Contingencies (Textual)
Employment agreements, description		The Company entered into an amended and restated change in control agreement with Corisa L. Guiffre, Vice President, Chief Financial Officer and Assistant Corporate Secretary of the Company. The change in control agreement provides Ms. Guiffre with a severance benefit upon termination in connection with a change in control (as defined in the agreement). If Ms. Guiffre is terminated following a change in control, the Company will pay Ms. Guiffre a sum equal to three times Ms. Guiffre's average annual compensation for the five preceding taxable years. All restrictions on any restricted stock will lapse immediately and incentive stock options and stock appreciation rights, if any, will become immediately exercisable in the event of a change in control of the Company. Additionally, life, medical, dental and disability coverage and payments will be continued for 36 full calendar months following the date of termination.
Lease terms			54 months	56 months
Property, Plant and Equipment [Member] | Lower range [Member]
Commitments and Contingencies (Textual)
Lease terms			1 year
Property, Plant and Equipment [Member] | Upper range [Member]
Commitments and Contingencies (Textual)
Lease terms			2 years
Mr. Andrea [Member]
Commitments and Contingencies (Textual)
Term of employment agreement	The effective date of the original employment agreement was August 1, 2014 and it currently expires on July 31, 2021, subject to renewal as approved by the Compensation Committee of the Board of Directors.
Annual base salary	$ 216,000
Percentage of quarterly bonus	5.00%
Maximum quarterly bonus	$ 12,500
Percentage of annual bonus	9.00%
Annual pre-bonus net after tax earnings, Minimum	$ 300,000
Annual pre-bonus net after tax earnings, Maximum	$ 3,000,000
Percentage of adjusted pre-annual bonus	3.00%
Annual pre-bonus adjusted net after tax earnings, Maximum	$ 3,000,000
Description of employment agreement with Mr. Andrea	Mr. Andrea is entitled to a change in control payment equal to twelve months of Mr. Andrea’s most recent base salary plus a pro-rated portion of Mr. Andrea's most recent annual and four quarterly bonuses paid immediately preceding the change of control, continuation of health and medical benefits for twelve months and immediate vesting of all stock options in the event of a change in control during the term of his agreement and subsequent termination of his employment within twelve months following the change of control. In the event of his termination without cause or resignation with the Company’s consent, Mr. Andrea is entitled to a severance payment equal to two months of his base salary, plus the two months pro-rated portion of his most recent annual and quarterly bonuses, payment of $12,500 (the un-paid bonus for the quarter ended September 30, 2017) and a continuation of health insurance coverage for Mr. Andrea and his dependents for 6 months.
Future minimum cash commitments			$ 72,000