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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Receivables) (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | --- | --- | ---
Disaggregation of Revenue [Line Items] |  |  |  |
Accounts receivable, gross | $ 1,933 | $ 1,794 |  |
Less allowance for credit losses | (957) | (995) | $ (2,655) | $ (2,572)
Accounts receivable, net | 976 | 799 |  |
Medicaid |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Accounts receivables, gross of allowance for credit losses | 5 | (12) |  |
Medicare |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Accounts receivable, gross | 1,291 | 1,086 |  |
Self-pay |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Accounts receivable, gross | 15 | 13 |  |
Third party payers |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Accounts receivable, gross | 534 | 530 |  |
Contract diagnostic services, product and other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Accounts receivable, gross | $ 88 | $ 177 |  |

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