SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Gross to Net Sales Adjustments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Gross revenue	$ 15,883	$ 8,175
Contractual allowance and adjustments	(8,452)	(4,080)
Service revenue, net	7,431	4,095
Medicaid [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	53	31
Contractual allowance and adjustments		(3)
Service revenue, net	53	28
Medicare [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	2,882	1,686
Contractual allowance and adjustments		(17)
Service revenue, net	2,882	1,669
Self-Pay [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	411	34
Contractual allowance and adjustments	(3)
Service revenue, net	408	34
Third Party Payer [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	11,891	5,785
Contractual allowance and adjustments	(8,449)	(4,060)
Service revenue, net	3,442	1,725
Contract Diagnostic Services [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	426	595
Service revenue, net	426	595
Clinical Research Grants and Other [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	220	44
Service revenue, net	220	44
Service revenue, net [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	15,663	8,131
Contractual allowance and adjustments	(8,452)	(4,080)
Service revenue, net	$ 7,211	$ 4,051