LEASES - Operating and Financing leases (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Balance sheet presentation of our operating and financing leases
Operating lease right-of-use assets, net	$ 498	$ 612
Finance lease right-of-use assets, net	372	174
Total lease assets	870	786
Current maturities of operating lease liabilities	208	218
Current maturities of finance lease liabilities	105	132
Operating lease liabilities, less current maturities	301	407
Finance lease liabilities, less current maturities	215	18
Present value of net minimum lease obligations	829	775
HemeScreen Reagent Rental [Member]
Balance sheet presentation of our operating and financing leases
Finance lease right-of-use assets, net	$ 0	$ 0