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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Tables) | 6 Months Ended
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Jun. 30, 2020
SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE [Abstract] |
Schedule of Net Revenues |
|  | For the Three Months Ended June 30,
(dollars in thousands) |  | Diagnostic Testing |  | Biomarker Testing |  | Total
|  | 2020 |  | 2019 |  | 2020 |  | 2019 |  | 2020 |  | 2019
Medicaid |  | $ | 16 |  | $ | 9 |  | $ | — |  | $ | — |  | $ | 16 |  | $ | 9
Medicare |  |  | 643 |  |  | 450 |  |  | — |  |  | — |  |  | 643 |  |  | 450
Self-pay |  |  | 86 |  |  | 11 |  |  | — |  |  | — |  |  | 86 |  |  | 11
Third party payers |  |  | 847 |  |  | 451 |  |  | — |  |  | — |  |  | 847 |  |  | 451
Contract diagnostics |  |  | — |  |  | — |  |  | 24 |  |  | 274 |  |  | 24 |  |  | 274
Service revenue, net |  | $ | 1,592 |  | $ | 921 |  | $ | 24 |  | $ | 274 |  | $ | 1,616 |  | $ | 1,195
|  | For the Six Months Ended June 30,
(dollars in thousands) |  | Diagnostic Testing |  | Biomarker Testing |  | Total
|  | 2020 |  | 2019 |  | 2020 |  | 2019 |  | 2020 |  | 2019
Medicaid |  | $ | 25 |  | $ | 12 |  | $ | — |  | $ | — |  | $ | 25 |  | $ | 12
Medicare |  |  | 1,168 |  |  | 844 |  |  | — |  |  | — |  |  | 1,168 |  |  | 844
Self-pay |  |  | 136 |  |  | 15 |  |  | — |  |  | — |  |  | 136 |  |  | 15
Third party payers |  |  | 1,363 |  |  | 807 |  |  | — |  |  | — |  |  | 1,363 |  |  | 807
Contract diagnostics |  |  | — |  |  | — |  |  | 382 |  |  | 427 |  |  | 382 |  |  | 427
Service revenue, net |  | $ | 2,692 |  | $ | 1,678 |  | $ | 382 |  | $ | 427 |  | $ | 3,074 |  | $ | 2,105
Schedule of Gross to Net Sales Adjustments | The following table presents our revenues initially recognized for each associated payer class during the three and six months ended June 30, 2020 and 2019.
|  | For the Three Months Ended June 30,
(dollars in thousands) |  |  |  | Contractual Allowances and |  | Revenues, net of Contractual
|  | Gross Revenues |  | adjustments |  | Allowances and adjustments
|  | 2020 |  | 2019 |  | 2020 |  | 2019 |  | 2020 |  | 2019
Medicaid |  | $ | 16 |  | $ | 12 |  | $ | — |  | $ | (3) |  | $ | 16 |  | $ | 9
Medicare |  |  | 643 |  |  | 467 |  |  | — |  |  | (17) |  |  | 643 |  |  | 450
Self-pay |  |  | 89 |  |  | 11 |  |  | (3) |  |  | — |  |  | 86 |  |  | 11
Third party payers |  |  | 2,949 |  |  | 1,571 |  |  | (2,102) |  |  | (1,120) |  |  | 847 |  |  | 451
Contract diagnostics |  |  | 24 |  |  | 274 |  |  | — |  |  | — |  |  | 24 |  |  | 274
|  |  | 3,721 |  |  | 2,335 |  |  | (2,105) |  |  | (1,140) |  |  | 1,616 |  |  | 1,195
Clinical research grants and other |  |  | 29 |  |  | 4 |  |  | — |  |  | — |  |  | 29 |  |  | 4
|  | $ | 3,750 |  | $ | 2,339 |  | $ | (2,105) |  | $ | (1,140) |  | $ | 1,645 |  | $ | 1,199
(dollars in thousands) |  | For the Six Months Ended June 30,
|  |  |  | Contractual Allowances and |  | Revenues, net of Contractual
|  | Gross Revenues |  | adjustments |  | Allowances and adjustments
|  | 2020 |  | 2019 |  | 2020 |  | 2019 |  | 2020 |  | 2019
Medicaid |  | $ | 25 |  | $ | 15 |  | $ | — |  | $ | (3) |  | $ | 25 |  | $ | 12
Medicare |  |  | 1,168 |  |  | 861 |  |  | — |  |  | (17) |  |  | 1,168 |  |  | 844
Self-pay |  |  | 139 |  |  | 15 |  |  | (3) |  |  | — |  |  | 136 |  |  | 15
Third party payers |  |  | 4,757 |  |  | 2,588 |  |  | (3,394) |  |  | (1,781) |  |  | 1,363 |  |  | 807
Contract diagnostics |  |  | 382 |  |  | 427 |  |  | — |  |  | — |  |  | 382 |  |  | 427
|  |  | 6,471 |  |  | 3,906 |  |  | (3,397) |  |  | (1,801) |  |  | 3,074 |  |  | 2,105
Clinical research grants and other |  |  | 53 |  |  | 11 |  |  | — |  |  | — |  |  | 53 |  |  | 11
|  | $ | 6,524 |  | $ | 3,917 |  | $ | (3,397) |  | $ | (1,801) |  | $ | 3,127 |  | $ | 2,116
Schedule of Reported Revenues Net of Collection Allowance [Table Text Block] |
|  | For the Three Months Ended June 30,
|  | Revenues, net of |  |  |  |
(dollars in thousands) |  | Contractual Allowances |  | Allowances for doubtful |  |
|  | and adjustments |  | accounts |  | Total
|  | 2020 |  | 2019 |  | 2020 |  | 2019 |  | 2020 |  | 2019
Medicaid |  | $ | 16 |  | $ | 9 |  | $ | (16) |  | $ | (9) |  | $ | — |  | $ | —
Medicare |  |  | 643 |  |  | 450 |  |  | (97) |  |  | (68) |  |  | 546 |  |  | 382
Self-pay |  |  | 86 |  |  | 11 |  |  | — |  |  | — |  |  | 86 |  |  | 11
Third party payers |  |  | 847 |  |  | 451 |  |  | (224) |  |  | (180) |  |  | 623 |  |  | 271
Contract diagnostics |  |  | 24 |  |  | 274 |  |  | — |  |  | — |  |  | 24 |  |  | 274
|  |  | 1,616 |  |  | 1,195 |  |  | (337) |  |  | (257) |  |  | 1,279 |  |  | 938
Clinical research grants and other |  |  | 29 |  |  | 4 |  |  | — |  |  | — |  |  | 29 |  |  | 4
|  | $ | 1,645 |  | $ | 1,199 |  | $ | (337) |  | $ | (257) |  | $ | 1,308 |  | $ | 942
|  | For the Six Months Ended June 30,
|  | Revenues, net of |  |  |  |
(dollars in thousands) |  | Contractual Allowances |  | Allowances for doubtful |  |
|  | and adjustments |  | accounts |  | Total
|  | 2020 |  | 2019 |  | 2020 |  | 2019 |  | 2020 |  | 2019
Medicaid |  | $ | 25 |  | $ | 12 |  | $ | (24) |  | $ | (12) |  | $ | 1 |  | $ | —
Medicare |  |  | 1,168 |  |  | 844 |  |  | (175) |  |  | (127) |  |  | 993 |  |  | 717
Self-pay |  |  | 136 |  |  | 15 |  |  | — |  |  | — |  |  | 136 |  |  | 15
Third party payers |  |  | 1,363 |  |  | 807 |  |  | (404) |  |  | (322) |  |  | 959 |  |  | 485
Contract diagnostics |  |  | 382 |  |  | 427 |  |  | — |  |  | — |  |  | 382 |  |  | 427
|  |  | 3,074 |  |  | 2,105 |  |  | (603) |  |  | (461) |  |  | 2,471 |  |  | 1,644
Clinical research grants and other |  |  | 53 |  |  | 11 |  |  | — |  |  | — |  |  | 53 |  |  | 11
|  | $ | 3,127 |  | $ | 2,116 |  | $ | (603) |  | $ | (461) |  | $ | 2,524 |  | $ | 1,655
Schedule of Receivables |
(dollars in thousands) |  | June 30, 2020 |  | December 31, 2019
Medicaid |  | $ | 128 |  | $ | 107
Medicare |  |  | 1,166 |  |  | 814
Self-pay |  |  | 215 |  |  | 88
Third party payers |  |  | 2,861 |  |  | 2,203
Contract diagnostic services |  |  | 264 |  |  | 36
|  | $ | 4,634 |  | $ | 3,248
Less allowance for doubtful accounts |  |  | (3,280) |  |  | (2,674)
Accounts receivable, net |  | $ | 1,354 |  | $ | 574
Schedule of Allowance for Doubtful Accounts |
|  |  |  |  | Allowance for
|  |  |  |  | Doubtful
(dollars in thousands) |  |  |  |  | Accounts
Balance, January 1, 2020 |  |  |  |  | $ | (2,674)
Collection Allowance: |  |  |  |  |  |
Medicaid |  | $ | (24) |  |  |
Medicare |  |  | (175) |  |  |
Third party payers |  |  | (404) |  |  |
|  |  | (603) |  |  |
Bad debt expense |  | $ | (3) |  |  |
Total charges |  |  |  |  |  | (606)
Balance, June 30, 2020 |  |  |  |  | $ | (3,280)
Schedule of Customer Revenue and Accounts Receivable Concentrations |
|  | Net sales |  |  | Accounts receivable, as of |
|  | Three Months Ended |  |  | Six Months Ended |  |  |  |
|  | June 30, |  |  | June 30, |  |  | June 30, |  | December 31, |
|  | 2020 |  | 2019 |  |  | 2020 |  | 2019 |  |  | 2020 |  | 2019 |
Customer A |  | * |  | * |  |  | 13 | % | * |  |  | 14 | % | * |
Customer B |  | * |  | 11 | % |  | * |  | * |  |  | * |  | 17 | %
Customer C |  | 11 | % | * |  |  | * |  | * |  |  | * |  | 12 | %
Customer D |  | * |  | 29 | % |  | * |  | 26 | % |  | * |  | * |
Customer E |  | 12 | % | * |  |  | 11 | % | * |  |  | 10 | % | * |
* represents less than 10% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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