Notes Payable, Related Party Notes Payable and Finance Lease Obligations (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Notes Payable, Related Party Notes Payable and Finance Lease Obligations (Details) [Line Items]
Loan and security agreement, description	the Company entered into the First Amendment to Loan and Security Agreement (“First Amendment”). The terms of the amendment increase the Term Loan to $5,685,000. The repayment terms of the term loan were amended to provide monthly principal installments in the amount of $67,679 beginning on December 1, 2020, with a final payment of any unpaid balance of principal and interest payable on December 30, 2022. Additionally, the date by which certain subordinated third-party notes need to be extended by was changed from September 30, 2020 to November 30, 2020. The Company has paid an amendment fee of $20,000.
SNB facility, description	the terms of the SNB Facility, both the SNB revolving line of credit and the SNB term loan will bear an interest rate equal to 30-day LIBOR (with a 1% floor) plus 2.5%. The average interest rate charged during the period ended March 31, 2021 was 3.5%.
Interest expense related parties	$ 125,000	$ 128,000
Interest incurred on notes to third parties	0	42,000
Amortization of debt discount		4,000
SBA Loans [Member]
Notes Payable, Related Party Notes Payable and Finance Lease Obligations (Details) [Line Items]
Revolving credit loan term amount	$ 16,000,000
SNB Bank [Member]
Notes Payable, Related Party Notes Payable and Finance Lease Obligations (Details) [Line Items]
Loan facility, description	The terms of the SNB Facility require that, among other things, the Company maintain a specified Fixed Charge Coverage Ratio of 1.25 to 1.00 at the end of each Fiscal Quarter beginning with the Fiscal Quarter ending March 31, 2020.
Principal amount	$ 20,143,000		$ 21,207,000
Revolving credit loan debt to SNB	14,781,000		15,649,000
Term loan amount	5,362,000		5,558,000
Interest expense	181,000	120,000
Notes Payable to Banks [Member]
Notes Payable, Related Party Notes Payable and Finance Lease Obligations (Details) [Line Items]
Loan obligation	46,000		$ 48,000
Convertible Notes Payable – Third Parties [Member]
Notes Payable, Related Party Notes Payable and Finance Lease Obligations (Details) [Line Items]
Interest expense related parties	$ 0	$ 42,000
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 included proceeds 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. were issued promissory notes totaling $554,000 for placement agency fees. 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 SNB Facility, these notes remain subordinate to the SNB Facility and are due on July 1, 2023. There are no principal payments due on these notes until such time.