SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Receivables) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Accounts Receivable, Gross	$ 3,561	$ 3,873
Less allowance for doubtful accounts	(2,655)	(2,572)
Accounts receivable, net	906	1,301
Medicaid [Member]
Disaggregation of Revenue [Line Items]
Accounts Receivable, Gross	20	25
Medicare [Member]
Disaggregation of Revenue [Line Items]
Accounts Receivable, Gross	1,579	1,561
Self-Pay
Disaggregation of Revenue [Line Items]
Accounts Receivable, Gross	203	229
Third-Party Payers [Member]
Disaggregation of Revenue [Line Items]
Accounts Receivable, Gross	1,476	1,641
Contract Diagnostic Services and Other [Member]
Disaggregation of Revenue [Line Items]
Accounts Receivable, Gross	$ 283	$ 417