Sale and Leaseback Transaction (Details) - USD ($)			1 Months Ended	12 Months Ended
	Oct. 01, 2018	Apr. 11, 2016	Oct. 24, 2006	Dec. 31, 2018
Sale and Leaseback Transaction (Textual)
Purchase price		$ 1,700,000
Sale of stock transaction, description	The Company agreed to pay Taglich Brothers $70,000 (7% of the gross proceeds of the offering) for acting as placement agent for the offering.
South Windsor [Member]
Sale and Leaseback Transaction (Textual)
Base annual rent		$ 155,000
Percentage of base annual rent		3.00%
Lease term		15 years
Bay Shore [Member]
Sale and Leaseback Transaction (Textual)
Purchase price			$ 6,200,000
Sale of stock transaction, description			The Company realized a gain on the sale of $1,051,000 of which $300,000 was recognized during the year ended December 31, 2006. The remaining $751,000 is being recognized ratably over the remaining term of the twenty - year lease at approximately $38,000 per year. The gain is included in Other Income in the accompanying Consolidated Statements of Operations. The unrecognized portion of the gain in the amount of $295,000 and $333,000 as of December 31, 2018 and 2017, respectively, is classified as Deferred Gain on Sale in the accompanying Consolidated Balance Sheets.	The Company entered into a 20-year triple- net lease (the ?Lease?) with the purchaser for the property. Base annual rent is approximately $540,000 for the first five years, $560,000 for the sixth year, and thereafter increases 3% per year. The Lease grants the Company an option to renew the Lease for an additional period of five years. The Company has on deposit with the purchaser $89,000 as security for the performance of its obligations under the Lease. In addition, the Company has on deposit $150,000 with the landlord as security for the completion of certain repairs and upgrades to the Bay Shore Property.
Lease term				20 years