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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Net Revenues) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | $ 917 | $ 796
Service revenue, net [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 910 | 791
Diagnostic Testing [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 757 | 303
Biomarker Testing and Clinical Project Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 153 | 488
Medicaid [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 3 | 12
Medicaid [Member] | Service revenue, net [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 3 | 12
Medicaid [Member] | Diagnostic Testing [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 3 | 12
Medicare [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 394 | 134
Medicare [Member] | Service revenue, net [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 394 | 134
Medicare [Member] | Diagnostic Testing [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 394 | 134
Self-Pay [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 4 | 26
Self-Pay [Member] | Service revenue, net [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 4 | 26
Self-Pay [Member] | Diagnostic Testing [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 4 | 26
Third-Party Payor [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 356 | 131
Third-Party Payor [Member] | Service revenue, net [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 356 | 131
Third-Party Payor [Member] | Diagnostic Testing [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 356 | 131
Contract Diagnostic Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 153 | 488
Contract Diagnostic Services [Member] | Service revenue, net [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 153 | 488
Contract Diagnostic Services [Member] | Biomarker Testing and Clinical Project Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 153 | 488
Clinical Research Grants and Other [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | 7 | 5
Clinical Research Grants and Other [Member] | Service revenue, net [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, net of contractual allowances and adjustments | $ 7 | $ 5

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