Notes Payable, Related Party Notes Payable and Finance Lease Obligations (Details) - USD ($)				3 Months Ended		12 Months Ended
	Dec. 07, 2021	Jun. 14, 2021	Nov. 06, 2020	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Notes Payable, Related Party Notes Payable and Finance Lease Obligations (Details) [Line Items]
Revolving credit loan debt to Webster				$ 5,685,000
Outstanding under revolving line of credit				11,555,000
Revolving line of credit under term loan				3,999,000
Webster facility, description		In June 2021, the Company entered into the Second Amendment to the Loan and Security Agreement, which clarified the definition and calculation of Excess Cash Flow, and to confirm the due date of required payment of the Excess Cash Flow payment. For so long as the Webster term loan remains outstanding, if Excess Cash Flow (as defined) is a positive number for any fiscal year the Company shall pay to Webster an amount equal to the lesser of (i) twenty-five percent (25%) of the Excess Cash Flow for such fiscal year and (ii) the outstanding principal balance of the term loan. Such payment shall be made to Webster and applied to the outstanding principal balance of the term loan, on or prior to the close of the fiscal year immediately following such fiscal year. The Company made Excess Cash Flow payments of $558,750 in 2021 (for the fiscal year ended December 31, 2020) and paid $854,000 in April 2022 (for fiscal year ended December 31, 2021). In connection with these changes, the Company paid an amendment fee of $10,000.				As of December 31, 2021, our debt to Webster in the amount of $16,648,000 consisted of the Webster revolving line of credit note in the amount of $12,456,000 and the Webster term loan in the amount of $4,192,000.
Interest expense				$ 155,000	$ 181,000
Loan and security agreement, description			the Company entered into the First Amendment to the Loan and Security Agreement which increased the Term Loan to $5,685,000 and required the Company to make monthly principal installments in the amount of $67,679 beginning on December 1, 2020. Other minor modifications were made and the Company paid an amendment fee of $20,000.
Line of credit term description	The purpose of the amendment was to provide a maturity date for the Webster Facility of December 30, 2025 as compared to the original maturity date of December 30, 2022. Such amendment also increased the Revolving Line of Credit to its current limit of $20,000,000 (up from the original $16,000,000) and also provided for a similar increase in the inventory sublimit to $14,000,000 (up from the original $11,000,000). The Third Amendment, also allows the Company, subject to certain limitations, to begin amortizing a portion of its subordinated debt. In connection with these changes, the Company paid an amendment fee of $75,000.
Finance lease						$ 262,000
Lease imputed interest Percentage						4.20%
Robert and Michael Taglich [Member]
Notes Payable, Related Party Notes Payable and Finance Lease Obligations (Details) [Line Items]
Loan facility, description				From 2016 through 2020, the Company entered into various subordinated notes payable and convertible subordinated notes payable with Michael and Robert Taglich. These notes resulted in proceeds to the Company totaling $6,550,000. In connection with these notes, Michael and Robert were issued a total of 355,082 shares of common stock and Taglich Brothers Inc. was issued promissory notes totaling $554,000 for placement agency fees. At December 31, 2020, related party notes payable totaled $6,012,000 and accrued interest totaled $400,000. On January 1, 2021, the related party subordinated notes due to Michael and Robert Taglich and Taglich Brothers, Inc., were amended to include all accrued interest through December 31, 2020 in the principal balance of the notes. Per the terms of the Webster Facility, these notes remain subordinate to the Webster Facility and are due on July 1, 2026. Approximately $2,732,000 of the related party subordinated notes can be converted at the option of the holder into Common Stock of the Company at $1.50 per share, while the remaining $2,080,000 of the related party subordinated notes can be converted at the option of the holder into common stock of the Company at $0.93 per share.
Webster Bank [Member]
Notes Payable, Related Party Notes Payable and Finance Lease Obligations (Details) [Line Items]
Revolving credit loan term amount						$ 20,000,000
Loan facility, description				In connection with the Webster Facility, the Company is required to maintain a defined Fixed Charge Coverage Ratio of 1.25 to 1.00 at the end of each Fiscal Quarter.
Webster Loans [Member]
Notes Payable, Related Party Notes Payable and Finance Lease Obligations (Details) [Line Items]
Loan balance, description				Under the terms of the Webster Facility, both the Webster revolving line of credit and the Webster term loan will bear an interest rate equal to the greater of (i) 3.50% and (ii) a rate per annum equal to the rate per annum published from time to time in the “Money Rates” table of the Wall Street Journal (or such other presentation within The Wall Street Journal as may be adopted hereafter for such information) as the base or prime rate for corporate loans at the nation’s largest commercial bank, less sixty-five hundredths (-0.65%) of one percent per annum. The average interest rate charged during both of the three months ended March 31, 2022 and 2021 was 3.5%.
Notes Payable to Banks [Member]
Notes Payable, Related Party Notes Payable and Finance Lease Obligations (Details) [Line Items]
Loan Payable – Financed Asset				$ 37,000	39,000
Interest expense				$ 125,000	$ 125,000