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LEASES (Details Narrative)	3 Months Ended
	Mar. 31, 2022 USD ($) ft²	Mar. 31, 2021 USD ($)
Operating lease, weighted average discount rate, percentage	6.34%
Operating lease, weighted average remaining lease term	13 years 5 months 12 days
Operating lease, payments | $	$ 166,000	$ 251,000
Operating lease, expense | $	$ 238,000	261,000
Finance lease, weighted average discount rate, percentage	6.36%
Finance lease, weighted average remaining lease term	1 year 9 months 29 days
Amortization | $	$ 2,000	2,000
Finance lease, interest expense | $	$ 0	$ 1,000
Carlsbad [Member]
Area of Land	5,789
Lease expiration date description	July 2027
Ledgewood [Member]
Area of Land	35,326
Lease expiration date description	July 2026
Lease term, option to extend	an option to extend the term for two additional five-year periods.
Additional square footage	1,400
Ledgewood [Member] | Lease Amendment [Member]
Additional square footage	8,900
Nashville [Member]
Area of Land	5,500
Lease expiration date description	December 2024
Lease term, option to extend	an option to extend the term for two additional five-year periods.
Minimum [Member] | Office and Laboratory Space [Member]
Lease term	1 year
Maximum [Member] | Office and Laboratory Space [Member]
Lease term	5 years

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