Leases (Operating and Finance Lease Assets and Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Asset, operating	$ 73,488	$ 77,115
Asset, finance	7,547	8,820
Total leased assets	81,035	85,935
Present value of lease liabilities	73,481	76,746
Present value of lease liabilities	7,463	8,230
Total lease liabilities	$ 80,944	$ 84,976