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Leases (Narrative - Lessee) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Lessee, Lease, Description [Line Items]    
Operating Lease, Liability, Statement of Financial Position [Extensible List] us-gaap:OtherLiabilities us-gaap:OtherLiabilities
Operating Lease, Right-of-Use Asset $ 28,300 $ 26,300
Operating Lease, Liability 29,217 27,000
Lease, Cost $ 7,400 $ 7,300
Minimum [Member]    
Lessee, Lease, Description [Line Items]    
Lessee, Operating Lease, Renewal Term 1 month  
Maximum [Member]    
Lessee, Lease, Description [Line Items]    
Lessee, Operating Lease, Renewal Term 33 years