LEASES - Operating and Financing leases (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Balance sheet presentation of our operating and financing leases
Operating lease right-of-use assets, net	$ 714	$ 763
Finance lease right-of-use assets, net	234	257
Total lease assets	948	1,020
Current maturities of operating lease liabilities	205	199
Current maturities of finance lease liabilities	155	162
Operating lease liabilities, less current maturities	520	574
Finance lease liabilities, less current maturities	50	68
Total lease liabilities	930	1,003
HemeScreen Reagent Rental [Member]
Balance sheet presentation of our operating and financing leases
Finance lease right-of-use assets, net	$ 7,000	$ 13,000