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Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ in Thousands |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Oct. 02, 2018 | Oct. 02, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 02, 2018
Cash on hand |  |  | $ 810 | $ 1,063 |
Finite risk sinking fund |  |  | $ 15,971 | 15,676 |
Percentage of reserves for doubtful accounts receivable |  |  | 100.00% |  |
Capital lease |  |  | $ 517 | 0 |
Capital lease accumulated depreciation |  |  | 8 |  |
Capital lease net fixed asset |  |  | 509 |  |
Depreciation |  |  | 1,105 | 3,429 |
Impairment charges |  |  |  |  |
Revenues |  |  | 49,539 | 49,769 |
Increase in accumulated deficit |  |  |  |  | $ 316
Domestic Government [Member] |  |  |  |  |
Revenues |  |  | 34,811 | 37,019 |
Domestic Government [Member] | Sales Revenue, Net [Member] |  |  |  |  |
Revenues |  |  | $ 34,811 | $ 37,019 |
Concentration risk percentage |  |  | 70.30% | 74.40% |
Customer One [Member] | Accounts Receivable [Member] |  |  |  |  |
Concentration risk percentage |  |  | 13.00% | 17.90% |
Customer Two [Member] | Accounts Receivable [Member] |  |  |  |  |
Concentration risk percentage |  |  | 10.10% | 16.80% |
Medical Segment [Member] |  |  |  |  |
Research and development expense |  |  | $ 811 | $ 1,141 |
Minimum [Member] |  |  |  |  |
Receipt ranging percentage |  |  | 9.00% |  |
Right of use assets and related to liabilities |  |  | $ 2,500 |  |
Maximum [Member] |  |  |  |  |
Receipt ranging percentage |  |  | 33.00% |  |
Right of use assets and related to liabilities |  |  | $ 2,700 |  |
Building [Member] | Minimum [Member] |  |  |  |  |
Property, plant and equipment, useful life |  |  | 10 years |  |
Building [Member] | Maximum [Member] |  |  |  |  |
Property, plant and equipment, useful life |  |  | 40 years |  |
Office Furniture And Equipment [Member] | Minimum [Member] |  |  |  |  |
Property, plant and equipment, useful life |  |  | 3 years |  |
Office Furniture And Equipment [Member] | Maximum [Member] |  |  |  |  |
Property, plant and equipment, useful life |  |  | 7 years |  |
Foreign Subsidiaries [Member] |  |  |  |  |
Cash on hand |  |  | $ 806 | $ 305 |

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