SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Net Revenues) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	$ 2,446	$ 2,244	$ 4,973	$ 4,355
Service revenue, net [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	2,226	2,038	4,231	3,982
Medicaid [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	12	18
Medicaid [Member] | Service revenue, net [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	12	18	27	31
Medicaid [Member] | Diagnostic Testing [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	12	18	27	31
Medicare [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	1,076	1,009
Medicare [Member] | Service revenue, net [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	1,076	1,009	2,050	1,993
Medicare [Member] | Diagnostic Testing [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	1,076	1,009	2,050	1,993
Self-Pay [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	48	69
Self-Pay [Member] | Service revenue, net [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	48	69	97	116
Self-Pay [Member] | Diagnostic Testing [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	48	69	97	116
Third-Party Payor [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	1,090	921
Third-Party Payor [Member] | Service revenue, net [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	1,090	921	2,057	1,821
Third-Party Payor [Member] | Diagnostic Testing [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	1,090	921	2,057	1,821
Contract Diagnostic Services [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments		21
Contract Diagnostic Services [Member] | Service revenue, net [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments		21		21
Contract Diagnostic Services [Member] | Biomarker Testing and Clinical Project Services [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments		21		21
Services Revenue, Net [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	2,226	2,038
Services Revenue, Net [Member] | Service revenue, net [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments			4,231	3,982
Services Revenue, Net [Member] | Diagnostic Testing [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	$ 2,226	2,017	$ 4,231	3,961
Services Revenue, Net [Member] | Biomarker Testing and Clinical Project Services [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments		$ 21		$ 21