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Leases (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Leases (Details) [Line Items]        
Operating Lease, Expense $ 94,000 $ 124,000 $ 195,000 $ 249,000
Short-term Lease Payments $ 18,000 $ 32,000 $ 36,000 $ 64,000
Minimum [Member]        
Leases (Details) [Line Items]        
Lessee, Operating Lease, Renewal Term 1 year   1 year  
Maximum [Member]        
Leases (Details) [Line Items]        
Lessee, Operating Lease, Renewal Term 5 years   5 years