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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Net Revenues) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	$ 2,111	$ 1,482
Service revenue, net [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	1,944	1,458
Medicaid [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	13	9
Medicaid [Member] | Diagnostic Testing [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	13	9
Medicare [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	984	524
Medicare [Member] | Diagnostic Testing [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	984	524
Self-Pay [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	47	50
Self-Pay [Member] | Diagnostic Testing [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	47	50
Third Party Payers [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	900	517
Third Party Payers [Member] | Diagnostic Testing [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	900	517
Contract Diagnostic Services [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments		358
Contract Diagnostic Services [Member] | Biomarker Testing and Clinical Project Services [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments		358
Services Revenue, Net [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	1,944	1,458
Services Revenue, Net [Member] | Diagnostic Testing [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	1,944	1,100
Services Revenue, Net [Member] | Biomarker Testing and Clinical Project Services [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments		358
Other [Member]
Disaggregation of Revenue [Line Items]
Revenue, net of contractual allowances and adjustments	$ 167	$ 24

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+ References

No definition available.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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