LEASES - Operating and Financing leases (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	May 11, 2022
Balance sheet presentation of our operating and financing leases
Operating lease right-of-use assets, net	$ 612,000	$ 763,000	$ 100,000
Finance lease right-of-use assets, net	174,000	257,000
Total lease assets	786,000	1,020,000
Current maturities of operating lease liabilities	218,000	199,000
Current maturities of finance lease liabilities	132,000	162,000
Operating lease liabilities, less current maturities	407,000	574,000
Finance lease liabilities, less current maturities	18,000	68,000
Present value of net minimum lease obligations	775,000	1,003,000
HemeScreen Reagent Rental [Member]
Balance sheet presentation of our operating and financing leases
Finance lease right-of-use assets, net	$ 0	$ 13