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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Tables) | 3 Months Ended
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Mar. 31, 2023
SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE [Abstract] |
Schedule of Net Revenues | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Three Months Ended March 31,
(dollars in thousands) | ​ | Diagnostic Testing
​ |  | 2023 |  | 2022
Medicaid | ​ | $ | 8 | ​ | $ | 15
Medicare | ​ |  | 880 | ​ |  | 974
Self-pay | ​ |  | 80 | ​ |  | 49
Third party payers | ​ |  | 1,100 | ​ |  | 967
Service revenue, net | ​ | $ | 2,068 | ​ | $ | 2,005
​
Schedule of Gross to Net Sales Adjustments |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Three Months Ended March 31,
(dollars in thousands) | ​ | ​ | ​ | Contractual Allowances and | ​ | Revenues, net of Contractual
​ | ​ | Gross Revenues | ​ | adjustments | ​ | Allowances and adjustments
​ |  | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022
Medicaid | ​ | $ | 8 | ​ | $ | 15 | ​ | $ | — | ​ | $ | — | ​ | $ | 8 | ​ | $ | 15
Medicare | ​ |  | 880 | ​ |  | 974 | ​ |  | — | ​ |  | — | ​ |  | 880 | ​ |  | 974
Self-pay | ​ |  | 80 | ​ |  | 49 | ​ |  | — | ​ |  | — | ​ |  | 80 | ​ |  | 49
Third party payers | ​ |  | 3,835 | ​ |  | 3,385 | ​ |  | (2,735) | ​ |  | (2,418) | ​ |  | 1,100 | ​ |  | 967
​ | ​ |  | 4,803 | ​ |  | 4,423 | ​ |  | (2,735) | ​ |  | (2,418) | ​ |  | 2,068 | ​ |  | 2,005
Other | ​ |  | 761 | ​ |  | 522 | ​ |  | — | ​ |  | — | ​ |  | 761 | ​ |  | 522
​ | ​ | $ | 5,564 | ​ | $ | 4,945 | ​ | $ | (2,735) | ​ | $ | (2,418) | ​ | $ | 2,829 | ​ | $ | 2,527
​
Schedule of Reported Revenues Net of Collection Allowance | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Three Months Ended March 31,
​ | ​ | Revenues, net of | ​ | ​ | ​ |
(dollars in thousands) | ​ | Contractual Allowances | ​ | Allowances for doubtful | ​ |
​ | ​ | and adjustments | ​ | accounts | ​ | Total
​ |  | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022
Medicaid | ​ | $ | 8 | ​ | $ | 15 | ​ | $ | (4) | ​ | $ | (7) | ​ | $ | 4 | ​ | $ | 8
Medicare | ​ |  | 880 | ​ |  | 974 | ​ |  | — | ​ |  | (24) | ​ |  | 880 | ​ |  | 950
Self-pay | ​ |  | 80 | ​ |  | 49 | ​ |  | (8) | ​ |  | — | ​ |  | 72 | ​ |  | 49
Third party payers | ​ |  | 1,100 | ​ |  | 967 | ​ |  | — | ​ |  | (49) | ​ |  | 1,100 | ​ |  | 918
​ | ​ |  | 2,068 | ​ |  | 2,005 | ​ |  | (12) | ​ |  | (80) | ​ |  | 2,056 | ​ |  | 1,925
Other | ​ |  | 761 | ​ |  | 522 | ​ |  | — | ​ |  | — | ​ |  | 761 | ​ |  | 522
​ | ​ | $ | 2,829 | ​ | $ | 2,527 | ​ | $ | (12) | ​ | $ | (80) | ​ | $ | 2,817 | ​ | $ | 2,447
​
Schedule of Receivables | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(dollars in thousands) |  | March 31, 2023 |  | December 31, 2022
Medicaid | ​ | $ | 31 | ​ | $ | 34
Medicare | ​ |  | 1,080 | ​ |  | 1,124
Self-pay | ​ |  | 252 | ​ |  | 291
Third party payers | ​ |  | 1,446 | ​ |  | 1,888
Contract diagnostic services and other | ​ |  | 415 | ​ |  | 53
​ | ​ | $ | 3,224 | ​ | $ | 3,390
Less allowance for doubtful accounts | ​ |  | (2,366) | ​ |  | (2,354)
Accounts receivable, net | ​ | $ | 858 | ​ | $ | 1,036
​
Schedule of Allowance for Doubtful Accounts | The following table presents the roll-forward of the allowance for doubtful accounts for the three months ended March 31, 2023.
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Allowance for
​ | ​ | ​ | ​ | ​ | Doubtful
(dollars in thousands) | ​ | ​ | ​ | ​ | Accounts
Balance, January 1, 2023 |  | ​ |  | ​ | $ | (2,354)
Collection Allowance: |  | ​ |  | ​ |  |
Medicaid | ​ | $ | (4) | ​ |  |
Medicare | ​ |  | — | ​ |  |
Self-pay | ​ | ​ | (8) | ​ | ​ | ​
Third party payers | ​ |  | — | ​ |  |
​ | ​ |  | (12) | ​ |  |
Bad debt expense | ​ | $ | — | ​ |  |
Total charges | ​ |  |  | ​ |  | (12)
Balance, March 31, 2023 | ​ |  |  | ​ | $ | (2,366)
​
Schedule of Customer Revenue and Accounts Receivable Concentrations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Net sales | ​ | Accounts receivable, as of | ​
​ | ​ | Three Months Ended | ​ | ​ | ​
​ | ​ | March 31, | ​ | March 31, | ​ | December 31, | ​
​ | ​ | 2023 | ​ | 2022 | ​ | 2023 | ​ | 2022 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Customer A | ​ | 18 | % | * | ​ | 31 | % | * | ​
Customer B | ​ | * | ​ | 10 | % | * | ​ | * | ​
Customer C | ​ | * | ​ | * | ​ | * | ​ | 12 | %
Customer D | ​ | * | ​ | * | ​ | 12 | % | * | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
* represents less than 10% | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

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