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Long-term Debt (Details Narrative) - USD ($) $ in Thousands |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 28, 2018 | Apr. 30, 2015 | Dec. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2018 | May 31, 2013
Term loan |  |  | $ 3,750 |  |  |
Current portion of long-term debt |  |  | 1,000 | $ 5,059 |  |
Debt issuance costs |  |  | 23 |  |  |
Unamortized Debt Issuance Expense |  |  | 21 |  |  |
Amount borrowed during period |  |  | 9,690 |  |  |
Interest expense debt |  |  | 296 | $ 425 |  |
First Line Of Credit [Member] |  |  |  |  |  |
Line of credit principal and interest payments due |  |  | $ 1,000 |  |  |
Line of credit, installment term |  |  | 36 months |  |  |
Second Line Of Credit [Member] |  |  |  |  |  |
Line of credit principal and interest payments due |  |  | $ 1,000 |  |  |
Line of credit, installment term |  |  | 35 months |  |  |
Equipment Notes Payable [Member] |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 9,690 |  |  |
Line of credit interest rate |  |  | Each tranche borrowed through August 2015 incurred interest at 8.32% per annum; the interest for tranches borrowed thereafter was reduced to rates between 7.32% to 8.05% per annum. |  |  |
Line of credit facility interest rate |  |  | 24.00% |  |  |
Loan and Security Agreement [Member] |  |  |  |  |  |
Term loan | $ 4,000 |  | $ 2,750 |  | $ 4,000 |
Term of the loan | 48 months |  |  |  | 48 months |
Repayment of EWB loan | $ 4,050 |  |  |  |  |
Accrued and unpaid interest, paid | 50 |  |  |  |  |
Debt instrument monthly principal payments | $ 83 |  |  |  |  |
Debt instrument maturity date | Sep. 30, 2022 |  |  |  |  |
Debt instrument interest rate term | The loan bears interest at a variable rate per annum equal to the prime rate as set forth in The Wall Street Journal plus 1.75% |  |  |  |  |
Minimum EBITDA | $ 1,000 |  |  |  |  |
Aggregate amount of unrestricted cash to be maintained | 2,000 |  |  |  |  |
Facility fee | $ 20 |  | 20 |  |  |
Loan repayment description | If the Company prepays the loan before September 28, 2019, it must pay a prepayment fee of 1.75% of the principal amount repaid, and if the Company prepays the loan on or after such date but before September 28, 2020, it must pay a prepayment fee of 1.00% of the principal amount prepaid. There is no prepayment fee if the Company prepays the loan on or after September 28, 2020. |  |  |  |  |
Outstanding loan amount |  |  | 3,750 |  |  |
Current portion of long-term debt |  |  | 1,000 |  |  |
Debt issuance costs |  |  | 23 |  |  |
Unamortized Debt Issuance Expense |  |  | 21 |  |  |
Loan and Security Agreement [Member] | September 28, 2019 [Member] |  |  |  |  |  |
Percentage of prepayment fee | 1.75% |  |  |  |  |
Loan and Security Agreement [Member] | September 28, 2020 [Member] |  |  |  |  |  |
Percentage of prepayment fee | 1.00% |  |  |  |  |
Loan and Security Agreement [Member] | After September 28, 2020 [Member] |  |  |  |  |  |
Percentage of prepayment fee |  |  |  |  |  |
Financing Arrangement [Member] | Equipment Notes Payable [Member] |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  | $ 500
Debt instrument outstanding amount |  |  |  |  |  |
Loan Agreement with EWB [Member] | Equipment Notes Payable [Member] |  |  |  |  |  |
Amount borrowed during period |  | $ 3,381 |  |  |  |

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