Leases (Components of Lease Costs) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease costs	$ 4,678
Variable lease costs	694
Total lease costs	5,372
Land [Member]
Lessee, Lease, Description [Line Items]
Operating lease costs	4,195
Variable lease costs	386
Total lease costs	4,581
Building [Member]
Lessee, Lease, Description [Line Items]
Operating lease costs	483
Variable lease costs	308
Total lease costs	$ 791