Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Leases (Details Textual)

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Note 6 - Leases (Details Textual) - USD ($)
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Lessee, Operating Lease, Remaining Lease Term (Year) 10 years  
Operating Lease, Right-of-Use Asset $ 17,000,000.0 $ 17,900,000
Operating Lease, Liability, Total $ 17,700,000 $ 18,500,000
Operating Lease, Weighted Average Remaining Lease Term (Year) 6 years 8 months 12 days  
Operating Lease, Weighted Average Discount Rate, Percent   2.42%
Operating Lease, Payments $ 1,000,000.0 $ 747,000