SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Gross to Net Sales Adjustments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Gross revenue	$ 4,945	$ 4,344
Contractual allowance and adjustments	(2,418)	(2,233)
Service revenue, net	2,527	2,111
Medicaid [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	15	13
Service revenue, net	15	13
Medicare [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	974	984
Service revenue, net	974	984
Self-Pay [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	49	47
Service revenue, net	49	47
Third-Party Payor [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	3,385	3,133
Contractual allowance and adjustments	(2,418)	(2,233)
Service revenue, net	967	900
Service revenue, net [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	4,423	4,177
Contractual allowance and adjustments	(2,418)	(2,233)
Service revenue, net	2,005	1,944
Other [Member]
Disaggregation of Revenue [Line Items]
Gross revenue	522	167
Service revenue, net	$ 522	$ 167