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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Gross to Net Sales Adjustments) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disaggregation of Revenue [Line Items] |  |
Gross revenue | $ 4,901 | $ 2,896
Contractual allowance and adjustments | (1,453) | (863)
Service revenue, net | 3,448 | 2,033
Service revenue, net [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Gross revenue | 4,788 | 2,565
Contractual allowance and adjustments | (1,453) | (863)
Service revenue, net | 3,335 | 1,702
Service revenue, net [Member] | Medicaid [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Gross revenue | 86 | 87
Contractual allowance and adjustments | (36) | (48)
Service revenue, net | 50 | 39
Service revenue, net [Member] | Medicare [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Gross revenue | 1,019 | 546
Contractual allowance and adjustments | (19) | 23
Service revenue, net | 1,000 | 569
Service revenue, net [Member] | Self-Pay [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Gross revenue | 138 | 131
Contractual allowance and adjustments |  | (28)
Service revenue, net | 138 | 103
Service revenue, net [Member] | Third-Party Payor [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Gross revenue | 2,358 | 1,310
Contractual allowance and adjustments | (1,398) | (810)
Service revenue, net | 960 | 500
Service revenue, net [Member] | Contract Diagnostic Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Gross revenue | 1,187 | 491
Service revenue, net | 1,187 | 491
Clinical Research Grants and Other [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Gross revenue | 113 | 331
Service revenue, net | 113 | 331
Clinical research grants [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Service revenue, net | 100 | 278
Other [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Service revenue, net | $ 13 | $ 53

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