Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Leases (Details Textual)

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Note 10 - Leases (Details Textual) - USD ($)
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Sublease Income $ 85,000 $ 132,000
Operating Lease and Finance lease, Right-of-Use Asset 630,000 590,000
Lease Liability, Current and Noncurrent Portion [Member]    
Operating Lease, Liability, Total $ 645,000 $ 690,000
Real Estate Lease One [Member]    
Lessee, Operating Lease, Term of Contract (Month) 36 months  
Real Estate Lease Two [Member]    
Lessee, Operating Lease, Term of Contract (Month) 37 months