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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Sales, Net of Collection Allowance) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue, net of contractual allowances and adjustments | $ 3,645 | $ 2,446 | $ 6,474 | $ 4,973
Adjustment for allowance for doubtful accounts | (112) | (87) | (124) | (167)
Net sales | 3,533 | 2,359 | 6,350 | 4,806
Medicaid [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Adjustment for allowance for doubtful accounts |  |  | (6) |
Medicare [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Adjustment for allowance for doubtful accounts |  |  | (23) |
Third-Party Payor [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Adjustment for allowance for doubtful accounts |  |  | (83) |
Service revenue, net [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue, net of contractual allowances and adjustments | 2,768 | 2,226 | 4,836 | 4,231
Adjustment for allowance for doubtful accounts | (112) | (87) | (124) | (167)
Net sales | 2,656 | 2,139 | 4,712 | 4,064
Service revenue, net [Member] | Medicaid [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue, net of contractual allowances and adjustments | 5 | 12 | 13 | 27
Adjustment for allowance for doubtful accounts | (2) | (6) | (6) | (13)
Net sales | 3 | 6 | 7 | 14
Service revenue, net [Member] | Medicare [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue, net of contractual allowances and adjustments | 1,165 | 1,076 | 2,045 | 2,050
Adjustment for allowance for doubtful accounts | (23) | (27) | (23) | (51)
Net sales | 1,142 | 1,049 | 2,022 | 1,999
Service revenue, net [Member] | Self-Pay |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue, net of contractual allowances and adjustments | 36 | 48 | 116 | 97
Adjustment for allowance for doubtful accounts | (4) |  | (12) |
Net sales | 32 | 48 | 104 | 97
Service revenue, net [Member] | Third-Party Payor [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue, net of contractual allowances and adjustments | 1,562 | 1,090 | 2,662 | 2,057
Adjustment for allowance for doubtful accounts | (83) | (54) | (83) | (103)
Net sales | 1,479 | 1,036 | 2,579 | 1,954
Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue, net of contractual allowances and adjustments | 877 | 220 | 1,638 | 742
Net sales | $ 877 | $ 220 | $ 1,638 | $ 742

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