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Leases (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Leases (Details) [Line Items]    
Operating Lease, Expense $ 94,000 $ 101,000
Short-term Lease Payments $ 2,000 $ 18,000
Minimum [Member]    
Leases (Details) [Line Items]    
Lessee, Operating Lease, Renewal Term 1 year  
Maximum [Member]    
Leases (Details) [Line Items]    
Lessee, Operating Lease, Renewal Term 5 years