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Notes Payable, Related Party Notes Payable and Finance Lease Obligations (Details Textual) - USD ($) |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
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Nov. 03, 2020 | Jun. 26, 2019 | Jan. 15, 2019 | Jan. 31, 2020 | Oct. 21, 2019 | May 31, 2018 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019 | May 31, 2020 | Apr. 04, 2018 | Mar. 29, 2018
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan and security agreement |  |  |  |  |  |  |  |  | The Company entered into the First Amendment to Loan and Security Agreement ("First Amendment"). The terms of the agreement 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. |  |  |  |  |
Aggregate commission received |  |  |  |  |  |  |  |  | 4.00% |  |  |  |  |
Related party advances and notes payable, net of debt discounts |  |  |  |  |  |  | $ 6,018,000 |  | $ 6,018,000 |  |  |  |  |
Issuance of common stock, shares |  |  |  | 419,597 |  |  |  |  |  |  |  |  |  |
Proceeds from related party debt |  |  |  |  |  |  |  |  |  | $ 500,000 |  |  |  |
Interest rate |  |  |  |  |  |  | 3.00% |  | 3.00% |  | 12.00% |  |  |
Loan obligation |  |  |  |  |  |  | $ 50,000 |  | $ 50,000 |  | $ 0 |  |  |
Michael Taglich [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Advanced from related parties |  | $ 250,000 |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock, shares |  | 37,500 |  |  |  |  |  |  |  |  |  |  |  |
Notes payable percentage |  | 12.00% |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from related party debt |  |  |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |
Michael Taglich [Member] | Robert [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Advanced from related parties |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000 | $ 1,000,000
Robert [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock purchased, shares |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock purchase price, per share |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock, shares |  | 37,500 |  |  |  |  |  |  |  |  |  |  |  |
Robert and Michael Taglich [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan facility, description |  |  |  |  |  |  |  |  | From November 23, 2016 through March 21, 2017, the Company received gross proceeds of $4,775,000, of which $1,950,000 were received from Robert and Michael Taglich, from the sale of an equal principal amount of its 8% Subordinated Convertible Notes (the "8% Notes"), together with warrants to purchase a total of 383,080 shares of its common stock, in private placement transactions with accredited investors (the "8% Note Offerings"). In connection with the offering of the 8% Notes, the Company issued 8% Notes in the aggregate principal amount of $382,000 to Taglich Brothers, Inc., placement agent for the 8% Note Offerings, in lieu of payment of cash compensation for sales commissions, together with warrants to purchase a total of 180,977 shares of common stock. Payment of the principal and accrued interest on the 8% Notes are junior and subordinate in right of payment to our indebtedness under the SNB Facility. |  |  |  |  |
Interest-bearing, description |  |  |  |  |  |  |  |  | Interest on the 8% Notes is payable on the outstanding principal amount thereof at the annual rate of 8%, payable quarterly commencing February 28, 2017, in cash, or at the Company's option, in additional 8% Notes, provided that if accrued interest payable on $1,269,000 principal amount of the 8% Notes issued in December 2016 is paid in additional 8% Notes, interest for that quarterly interest payment shall be calculated at the rate of 12% per annum. Upon the occurrence and continuation of an event of default, interest shall accrue at the rate of 12% per annum. |  |  |  |  |
Interest expense |  |  |  |  |  |  | 125,000 | $ 265,000 | $ 378,000 | 740,000 |  |  |  |
Convertible notes payable |  |  |  |  |  |  | 6,018,000 |  | 6,018,000 |  | $ 6,862,000 |  |  |
Amortization of debt discount |  |  |  |  |  |  | 38,000 | 76,000 | 189,000 | 227,000 |  |  |  |
Unamortized debt discounts |  |  |  |  |  |  | 38,000 |  | $ 38,000 |  | 226,000 |  |  |
Taglich Brothers, Inc., [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party notes payable allocated percentage, description |  |  |  |  |  |  |  |  | 4% of the purchase price of the 7% Notes |  |  |  |  |
Convertible Notes Payable, Third Parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  | $ 38,000 | 63,000 | $ 118,000 | 319,000 |  |  |  |
Interest rate |  |  |  |  |  |  | 8.00% |  | 8.00% |  |  |  |  |
Share price |  |  |  | $ 1.50 |  |  |  |  |  |  |  |  |  |
Convertible notes payable |  |  |  |  |  |  | $ 1,440,000 |  | $ 1,440,000 |  | 2,338,000 |  |  |
Amortization of debt discount |  |  |  |  |  |  | 0 | 3,000 | 7,000 | $ 131,000 |  |  |  |
Convertible Notes Payable, Third Parties [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount | $ 1,225,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of principle convertible note interest rate | 8.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Debt converted | $ 210,282 |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debt, shares issued | 1,063,272 |  |  |  |  |  |  |  |  |  |  |  |  |
Share price | $ 1.35 |  |  |  |  |  |  |  |  |  |  |  |  |
Notes payable and finance lease obligations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party advances and notes payable, net of debt discounts |  |  |  |  |  |  | 6,018,000 |  | 6,018,000 |  | 6,862,000 |  |  |
Unamortized debt discounts |  |  |  |  |  |  | 0 |  | 0 |  | 7,000 |  |  |
Loan obligation |  |  |  |  |  |  | 220,000 |  | 220,000 |  | $ 385,000 |  |  |
SBA Loans [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  |  |  |  | $ 2,414,000 |  |
Revolving credit loan debt to SNB |  |  |  |  |  |  |  |  | 2,000,000 |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  | 1.00% |  |
Total debt amount |  |  |  |  |  |  | 2,414,000 |  | $ 2,414,000 |  |  |  |  |
SNB Bank [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
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. |  | The Company entered into a new loan facility ("SNB Facility") with Sterling National Bank, ("SNB") expiring on December 30, 2022. The new Loan Facility provides for a $16,000,000 revolving loan ("SNB revolving line of credit") and a term loan ("SNB term loan"). |  |  |
Interest-bearing, description |  |  |  |  |  |  |  |  | Under 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 September 30, 2020 was 3.5%. |  | The repayment terms of the SNB term loan provide for monthly principal installments in the amount of $45,238, payable on the first business day of each month, beginning on February 1, 2020, with a final payment of any unpaid balance of principal and interest payable on December 30, 2022. In addition, for so long as the SNB term loan remains outstanding, if Excess Cash Flow (as defined) is a positive number for any fiscal year, beginning with the year ending December 31, 2020, the Company shall pay to SNB 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 SNB and applied to the outstanding principal balance of the term loan, on or prior to April 15 of the Fiscal Year immediately following such Fiscal Year. |  |  |
Principal amount |  |  |  |  |  |  | 19,269,000 |  | $ 19,269,000 |  | $ 16,343,000 |  |  |
Revolving credit loan debt to SNB |  |  |  |  |  |  |  |  | 15,883,000 |  | 12,543,000 |  |  |
Term loan amount |  |  |  |  |  |  |  |  | 3,386,000 |  | $ 3,800,000 |  |  |
Interest expense |  |  |  |  |  |  | 147,000 |  | $ 420,000 |  |  |  |  |
Two Thousand Nineteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest-bearing, description |  |  |  |  |  |  |  |  | Interest on the 2019 Notes is payable on the outstanding principal amount thereof at the rate of one percent (1%) per month, payable monthly commencing June 30, 2018. Upon the occurrence and continuation of a failure to pay accrued interest, interest shall accrue and be payable on such amount at the rate of 1.25% per month; provided that upon the occurrence and continuation of a failure to timely pay the principal amount of the 2019 Note, interest shall accrue and be payable on such principal amount at the rate of 1.25% per month and shall no longer be payable on interest accrued but unpaid. The 2019 Notes are subordinate to the Company's obligations to SNB. |  |  |  |  |
Principal amount |  |  |  |  |  | $ 100,000 |  |  |  |  |  |  |  |
Common stock purchased, shares |  |  |  |  |  | 18,334 |  |  |  | 15,000 |  |  |  |
Common stock purchase price, per share |  |  |  |  |  |  |  |  |  | $ 1.01 |  |  |  |
Common stock warrants to purchase |  |  |  |  |  |  |  |  |  | 182,000 |  |  |  |
Common stock purchase price |  |  |  |  |  | $ 100,000 |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  | $ 1,200,000 |  |  |  |  |  |  |  |
Subordinated notes maturity date |  |  |  |  |  | May 31, 2019 |  |  |  | Jun. 30, 2020 |  |  |  |
Issuance of common stock, shares |  |  |  |  |  | 214,762 |  |  |  | 180,000 |  |  |  |
Accrued interest on notes payable |  |  |  |  |  | 1.25% |  |  |  |  |  |  |  |
Placement agent fee |  |  |  |  |  | 4.00% |  |  |  |  |  |  |  |
Two Thousand Nineteen [Member] | Michael Taglich [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  | $ 100,000 |  |  |  |  |  |  |  |
Issuance of common stock, shares |  |  |  |  |  | 17,857 |  |  |  |  |  |  |  |
Two Thousand Nineteen [Member] | Robert [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Placement invested percentage |  |  |  |  |  | 4.00% |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |  |  |
Issuance of common stock, shares |  |  |  |  |  | 178,571 |  |  |  |  |  |  |  |
Total purchase price |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |  |  |
PNC Bank [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  | $ 15,000,000 |  | $ 15,000,000 |  |  |  |  |
Interest expense |  |  |  |  |  |  |  | $ 391,000 |  | $ 954,000 |  |  |  |
2019 Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes payable percentage |  |  |  |  |  |  |  |  |  |  | 12.00% |  |  |
Senior Subordinated Convertible Promissory Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable and Capital Lease Obligations (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan facility, description |  |  | The Company issued its 7% senior subordinated convertible promissory notes due December 31, 2020, each in the principal amount of $1,000,000 (together, the "7% Notes"), to Michael Taglich and Robert Taglich, each for a purchase price of $1,000,000. The 7% Notes bear interest at the rate of 7% per annum, are convertible into shares of the Company's common stock at a conversion price of $0.93 per share, subject to the anti-dilution adjustments set forth in the 7% Notes and are subordinate to the Company's indebtedness under the SNB Facility. |  |  |  |  |  |  |  |  |  |  |
Related party notes payable allocated percentage, description |  |  | In connection with the 7% Notes, the Company paid Taglich Brothers, Inc. a fee of $80,000 (4% of the purchase price of the 7% Notes), paid in the form of a promissory note having terms similar to the 7% Notes. |  |  |  |  |  |  |  |  |  |  |

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