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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Sales, Net of Collection Allowance) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disaggregation of Revenue [Line Items] |  |
Revenues, net of contractual allowances and adjustments | $ 3,448 | $ 2,033
less allowance for doubtful accounts | (584) | (310)
Net sales | 2,864 | 1,723
Medicaid [Member] |  |
Disaggregation of Revenue [Line Items] |  |
less allowance for doubtful accounts | (50) |
Medicare [Member] |  |
Disaggregation of Revenue [Line Items] |  |
less allowance for doubtful accounts | (150) |
Third-Party Payor [Member] |  |
Disaggregation of Revenue [Line Items] |  |
less allowance for doubtful accounts | (384) |
Service revenue, net [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues, net of contractual allowances and adjustments | 3,335 | 1,702
less allowance for doubtful accounts | (584) | (315)
Net sales | 2,751 | 1,387
Service revenue, net [Member] | Medicaid [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues, net of contractual allowances and adjustments | 50 | 39
less allowance for doubtful accounts | (50) | (17)
Net sales |  | 22
Service revenue, net [Member] | Medicare [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues, net of contractual allowances and adjustments | 1,000 | 569
less allowance for doubtful accounts | (150) | (182)
Net sales | 850 | 387
Service revenue, net [Member] | Self-Pay [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues, net of contractual allowances and adjustments | 138 | 103
less allowance for doubtful accounts |  | (31)
Net sales | 138 | 72
Service revenue, net [Member] | Third-Party Payor [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues, net of contractual allowances and adjustments | 960 | 500
less allowance for doubtful accounts | (384) | (85)
Net sales | 576 | 415
Service revenue, net [Member] | Contract Diagnostic Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues, net of contractual allowances and adjustments | 1,187 | 491
Net sales | 1,187 | 491
Clinical Research Grants and Other [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues, net of contractual allowances and adjustments | 113 | 331
less allowance for doubtful accounts |  | 5
Net sales | 113 | 336
Clinical research grants [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues, net of contractual allowances and adjustments | 100 | 278
Other [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues, net of contractual allowances and adjustments | $ 13 | $ 53

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