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Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Revenue from external customers |  | $ 49,539 |  | $ 49,769 |
Intercompany revenues |  |  |  |  |
Gross profit |  | 8,461 |  | 8,620 |
Research and development |  | 1,370 |  | 1,595 |
Interest income |  | 295 |  | 140 |
Interest expense |  | (251) |  | (315) |
Interest expense-financing fees |  | (38) |  | (35) |
Depreciation and amortization |  | 1,455 |  | 3,803 |
Segment income (loss) before income taxes |  | (2,010) |  | (4,823) |
Income tax (benefit) expense |  | (936) |  | (1,285) |
Segment income (loss) |  | (1,074) |  | (3,538) |
Segment assets | [1] | 57,442 |  | 59,538 |
Expenditures for segment assets |  | 1,432 |  | 439 |
Total debt |  | 3,302 |  | 3,847 |
Treatment [Member] |  |  |  |  |
Revenue from external customers |  | 36,271 |  | 37,750 |
Intercompany revenues |  | 509 |  | 362 |
Gross profit |  | 7,197 |  | 7,916 |
Research and development |  | 483 |  | 439 |
Interest income |  |  |  |  |
Interest expense |  | (22) |  | (35) |
Interest expense-financing fees |  |  |  |  |
Depreciation and amortization |  | 943 |  | 3,228 |
Segment income (loss) before income taxes |  | 4,550 | [2] | 3,577 | [3]
Income tax (benefit) expense | [4] | (943) |  | (1,290) |
Segment income (loss) |  | 5,493 |  | 4,867 |
Segment assets | [1] | 32,800 |  | 32,724 |
Expenditures for segment assets |  | 1,311 |  | 396 |
Total debt |  |  |  |  |
Services [Member] |  |  |  |  |
Revenue from external customers |  | 13,268 |  | 12,019 |
Intercompany revenues |  | 70 |  | 31 |
Gross profit |  | 1,264 |  | 704 |
Research and development |  |  |  |  |
Interest income |  |  |  |  |
Interest expense |  | (2) |  | (5) |
Interest expense-financing fees |  |  |  |  |
Depreciation and amortization |  | 465 |  | 536 |
Segment income (loss) before income taxes |  | (756) |  | (2,286) |
Income tax (benefit) expense |  |  |  |  |
Segment income (loss) |  | (756) |  | (2,286) |
Segment assets | [1] | 5,188 |  | 6,324 |
Expenditures for segment assets |  | 117 |  | 43 |
Total debt |  |  |  |  |
Medical [Member] |  |  |  |  |
Revenue from external customers |  |  |  |  |
Intercompany revenues |  |  |  |  |
Gross profit |  |  |  |  |
Research and development |  | 811 |  | 1,141 |
Interest income |  |  |  |  |
Interest expense |  |  |  |  |
Interest expense-financing fees |  |  |  |  |
Depreciation and amortization |  |  |  |  |
Segment income (loss) before income taxes |  | (811) |  | (1,141) |
Income tax (benefit) expense |  |  |  |  |
Segment income (loss) |  | (811) |  | (1,141) |
Segment assets | [1] | 25 |  | 548 |
Expenditures for segment assets |  |  |  |  |
Total debt |  |  |  |  |
Segments Total [Member] |  |  |  |  |
Revenue from external customers | [5] | 49,539 |  | 49,769 |
Intercompany revenues |  | 579 |  | 393 |
Gross profit |  | 8,461 |  | 8,620 |
Research and development |  | 1,294 |  | 1,580 |
Interest income |  |  |  |  |
Interest expense |  | (24) |  | (40) |
Interest expense-financing fees |  |  |  |  |
Depreciation and amortization |  | 1,408 |  | 3,764 |
Segment income (loss) before income taxes |  | 2,983 |  | 150 |
Income tax (benefit) expense |  | (943) |  | (1,290) |
Segment income (loss) |  | 3,926 |  | 1,440 |
Segment assets | [1] | 38,013 |  | 39,596 |
Expenditures for segment assets |  | 1,428 |  | 439 |
Total debt |  |  |  |  |
Corporate [Member] |  |  |  |  |
Revenue from external customers | [6] |  |  |  |
Intercompany revenues | [6] |  |  |  |
Gross profit | [6] |  |  |  |
Research and development | [6] | 76 |  | 15 |
Interest income | [6] | 295 |  | 140 |
Interest expense | [6] | (227) |  | (275) |
Interest expense-financing fees | [6] | (38) |  | (35) |
Depreciation and amortization | [6] | 47 |  | 39 |
Segment income (loss) before income taxes | [6] | (4,993) |  | (4,973) |
Income tax (benefit) expense | [6] | 7 |  | 5 |
Segment income (loss) | [6] | (5,000) |  | (4,978) |
Segment assets | [1],[7] | 19,429 |  | 19,942 | [6]
Expenditures for segment assets | [6] | 4 |  |  |
Total debt | [8] | $ 3,302 |  | $ 3,847 | [6]
[1] | Segment assets have been adjusted for intercompany accounts to reflect actual assets for each segment.
[2] | Amount includes a net gain of $1,596,000 recorded resulting from the exchange offer of the Series B Preferred Stock of the Companys M&EC subsidiary (see Note 8 Series B Preferred Stock)
[3] | Amounts include tangible asset impairment loss of $672,000 for the Company's M&EC subsidiary.
[4] | For the year ended December 31, 2018 and 2017, amount includes a tax benefit recorded in the amount of approximately $1,235,000 and $1,695,000, respectively, resulting from the TCJA enacted on December 22, 2017 (see "Note 14 - Income Taxes" for further information of this tax benefit).
[5] | The Company performed services relating to waste generated by the domestic government clients (includes U.S federal, state and local), either directly as a prime contractor or indirectly for others as a subcontractor to government entities, representing approximately $34,811,000 or 70.3% of total revenue for 2018 and $37,019,000 or 74.4% of total revenue for 2017. The following reflects such revenue generated by our two segments: 2018, 2017 Treatment 25,181,000, 27,956,000 Services 9,630,000, 9,063,000 Total 34,811,000, 37,019,000
[6] | Amounts reflect the activity for corporate headquarters not included in the segment information.
[7] | Amount includes assets from our discontinued operations of $306,000 and $365,000 at December 31, 2018 and 2017, respectively.
[8] | Net of debt issuance costs of ($80,000) and ($115,000) for 2018 and 2017, respectively (see Note 10 - Long-Term Debt for additional information).

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