SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Gross to Net Sales Adjustments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Gross revenue	$ 2,257	$ 1,267	$ 6,174	$ 3,552
Contractual allowance and adjustments	(1,211)	(444)	(3,012)	(974)
Service revenue, net	1,046	823	3,162	2,578
Medicaid [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	10	30	25	71
Contractual allowance and adjustments		(15)	(3)	(33)
Service revenue, net	10	15	22	38
Medicare [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	373	293	1,234	722
Contractual allowance and adjustments		(5)	(17)	(19)
Service revenue, net	373	288	1,217	703
Self-Pay [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	5	48	20	94
Service revenue, net	5	48	20	94
Third Party Payer [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	1,701	713	4,289	1,561
Contractual allowance and adjustments	(1,211)	(424)	(2,992)	(922)
Service revenue, net	490	289	1,297	639
Contract Diagnostic Services [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	142	168	569	1,024
Service revenue, net	142	168	569	1,024
Clinical Research Grants and Other [Member]
Disaggregation of Revenue [Line Items]
Service revenue, net	26	15
Service revenue, net [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	2,231	1,252	6,137	3,472
Contractual allowance and adjustments	(1,211)	(444)	(3,012)	(974)
Service revenue, net	1,020	808	3,125	2,498
Clinical Research Grants and Other [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	26	15	37	80
Service revenue, net	$ 26	$ 15	$ 37	$ 80