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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Tables) | 12 Months Ended
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Dec. 31, 2022
SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE [Abstract] |
Schedule of Net Revenues |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Year Ended December 31,
(dollars in thousands) | ​ | Diagnostic Testing | ​ | Biomarker Testing | ​ | Total
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021 |  | 2022 |  | 2021
Medicaid | ​ | $ | 50 | ​ | $ | 43 | ​ | $ | — | ​ | $ | — | ​ | $ | 50 | ​ | $ | 43
Medicare | ​ |  | 3,831 | ​ |  | 3,838 | ​ |  | — | ​ |  | — | ​ |  | 3,831 | ​ |  | 3,838
Self-pay | ​ |  | 326 | ​ |  | 234 | ​ |  | — | ​ |  | — | ​ |  | 326 | ​ |  | 234
Third party payers | ​ |  | 4,211 | ​ |  | 3,612 | ​ |  | — | ​ |  | — | ​ |  | 4,211 | ​ |  | 3,612
Contract diagnostics | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 56 | ​ |  | — | ​ |  | 56
Service revenue, net | ​ | $ | 8,418 | ​ | $ | 7,727 | ​ | $ | — | ​ | $ | 56 | ​ | $ | 8,418 | ​ | $ | 7,783
Schedule of Gross to Net Sales Adjustments |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Year Ended December 31,
(dollars in thousands) | ​ | ​ | ​ | Contractual Allowances and | ​ | Revenues, net of Contractual
​ | ​ | Gross Revenues | ​ | adjustments | ​ | Allowances and adjustments
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021 |  | 2022 |  | 2021
Medicaid | ​ | $ | 50 | ​ | $ | 43 | ​ | $ | — | ​ | $ | — | ​ | $ | 50 | ​ | $ | 43
Medicare | ​ |  | 3,831 | ​ |  | 3,838 | ​ |  | — | ​ |  | — | ​ |  | 3,831 | ​ |  | 3,838
Self-pay | ​ |  | 326 | ​ |  | 234 | ​ |  | — | ​ |  | — | ​ |  | 326 | ​ |  | 234
Third party payers | ​ |  | 14,681 | ​ |  | 12,597 | ​ |  | (10,470) | ​ |  | (8,985) | ​ |  | 4,211 | ​ |  | 3,612
Contract diagnostics | ​ |  | – | ​ |  | 56 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 56
​ | ​ |  | 18,888 | ​ |  | 16,768 | ​ |  | (10,470) | ​ |  | (8,985) | ​ |  | 8,418 | ​ |  | 7,783
Other | ​ |  | 1,402 | ​ |  | 914 | ​ |  | — | ​ |  | — | ​ |  | 1,402 | ​ |  | 914
​ | ​ | $ | 20,290 | ​ | $ | 17,682 | ​ | $ | (10,470) | ​ | $ | (8,985) | ​ | $ | 9,820 | ​ | $ | 8,697
Schedule of Reported Revenues Net of Collection Allowance |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Year Ended December 31,
​ | ​ | Revenues, net of | ​ | ​ | ​ |
(dollars in thousands) | ​ | Contractual Allowances | ​ | Allowances for doubtful | ​ |
​ | ​ | and adjustments | ​ | accounts | ​ | Total
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021 |  | 2022 |  | 2021
Medicaid | ​ | $ | 50 | ​ | $ | 43 | ​ | $ | (25) | ​ | $ | (5) | ​ | $ | 25 | ​ | $ | 38
Medicare | ​ |  | 3,831 | ​ |  | 3,838 | ​ |  | (110) | ​ |  | (58) | ​ |  | 3,721 | ​ |  | 3,780
Self-pay | ​ |  | 326 | ​ |  | 234 | ​ |  | (19) | ​ |  | — | ​ |  | 307 | ​ |  | 234
Third party payers | ​ |  | 4,211 | ​ |  | 3,612 | ​ |  | (254) | ​ |  | 215 | ​ |  | 3,957 | ​ |  | 3,827
Contract diagnostics | ​ |  | — | ​ |  | 56 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 56
​ | ​ |  | 8,418 | ​ |  | 7,783 | ​ |  | (408) | ​ |  | 152 | ​ |  | 8,010 | ​ |  | 7,935
Other | ​ |  | 1,402 | ​ |  | 914 | ​ |  | — | ​ |  | — | ​ |  | 1,402 | ​ |  | 914
​ | ​ | $ | 9,820 | ​ | $ | 8,697 | ​ | $ | (408) | ​ | $ | 152 | ​ | $ | 9,412 | ​ | $ | 8,849
Schedule of Receivables | The following summarizes the mix of receivables as of December 31, 2022 and 2021:
​ | ​ | ​ | ​ | ​ | ​ | ​
(dollars in thousands) |  | December 31, 2022 |  | December 31, 2021
Medicaid | ​ | $ | 34 | ​ | $ | 45
Medicare | ​ |  | 1,124 | ​ |  | 727
Self-pay | ​ |  | 291 | ​ |  | 139
Third party payers | ​ |  | 1,888 | ​ |  | 2,111
Contract diagnostic services and other | ​ |  | 53 | ​ |  | 159
​ | ​ | $ | 3,390 | ​ | $ | 3,181
Less allowance for doubtful accounts | ​ |  | (2,354) | ​ |  | (2,484)
Accounts receivable, net | ​ | $ | 1,036 | ​ | $ | 697
Schedule of Allowance for Doubtful Accounts | ​ The following table presents the roll-forward of the allowance for doubtful accounts for the year ended December 31, 2022: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Allowance for
​ | ​ | ​ | ​ | ​ | Doubtful
(dollars in thousands) | ​ | ​ | ​ | ​ | Accounts
Balance, January 1, 2022 |  | ​ |  | ​ | $ | (2,484)
Collection Allowance: |  | ​ |  | ​ |  |
Medicaid | ​ | $ | (25) | ​ |  |
Medicare | ​ |  | (110) | ​ |  |
Self-pay | ​ | ​ | (19) | ​ | ​ | ​
Third party payers | ​ |  | (254) | ​ |  |
​ | ​ |  | (408) | ​ |  |
Bad debt expense | ​ | $ | 2 | ​ |  |
Total charges | ​ |  |  | ​ |  | (406)
Other | ​ | ​ | ​ | ​ | ​ | 536
Balance, December 31, 2022 | ​ |  |  | ​ | $ | (2,354)
​
Schedule of Customer Revenue and Accounts Receivable Concentrations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Net sales | ​ | ​ | Accounts receivable, as of | ​
​ | ​ | Years Ended | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | ​ | December 31, | ​ | December 31, | ​
​ | ​ | 2022 | ​ | 2021 | ​ | ​ | 2022 | ​ | 2021 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Customer A | ​ | * | ​ | * | ​ | ​ | * | ​ | 21 | %
Customer B | ​ | * | ​ | * | ​ | ​ | * | ​ | 12 | %
Customer C | ​ | * | ​ | * | ​ | ​ | 12 | % | * | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
* represents less than 10% | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

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