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Leases (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Operating Leased Assets [Line Items]    
Option to extend the lease, term up to 5 years  
Option to terminate the lease, term within 1 year  
Operating lease payments related to extended lease terms   $ 2,300
Lease payments for leases signed, but not yet commenced   $ 116
Minimum [Member]    
Operating Leased Assets [Line Items]    
Remaining terms of leases under operating lease 1 year  
Maximum [Member]    
Operating Leased Assets [Line Items]    
Remaining terms of leases under operating lease 10 years