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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Gross to Net Sales Adjustments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Gross revenue	$ 2,339	$ 1,297	$ 3,917	$ 2,285
Contractual allowance and adjustments	(1,140)	(338)	(1,801)	(530)
Service revenue, net	1,199	959	2,116	1,755
Medicaid [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	12	26	15	41
Contractual allowance and adjustments	(3)	(15)	(3)	(18)
Service revenue, net	9	11	12	23
Medicare [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	467	292	861	429
Contractual allowance and adjustments	(17)	(11)	(17)	(14)
Service revenue, net	450	281	844	415
Self-Pay [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	11	20	15	46
Service revenue, net	11	20	15	46
Third Party Payer [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	1,571	531	2,588	848
Contractual allowance and adjustments	(1,120)	(312)	(1,781)	(498)
Service revenue, net	451	219	807	350
Contract Diagnostic Services [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	274	368	427	856
Service revenue, net	274	368	427	856
Clinical Research Grants and Other [Member]
Disaggregation of Revenue [Line Items]
Service revenue, net	4	60
Service revenue, net [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	2,335	1,237	3,906	2,220
Contractual allowance and adjustments	(1,140)	(338)	(1,801)	(530)
Service revenue, net	1,195	899	2,105	1,690
Clinical Research Grants and Other [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	4	60	11	65
Service revenue, net	4	60	11	65
Clinical research grants [Member]
Disaggregation of Revenue [Line Items]
Service revenue, net		62		62
Other [Member]
Disaggregation of Revenue [Line Items]
Service revenue, net	$ 4	$ (2)	$ 11	$ 3

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