Leased Assets and Liabilities (Lease Maturity) (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Operating Leases
Remaining for year ending December 31, 2019	$ 22,257
Year ending December 31, 2020	42,878
Year ending December 31, 2021	35,937
Year ending December 31, 2022	27,637
Year ending December 31, 2023	21,032
Thereafter	89,177
Total	238,918
Less: present value discount	49,658
Lease liability	189,260
Finance Leases
Remaining for year ending December 31, 2019	1,803
Year ending December 31, 2020	3,105
Year ending December 31, 2021	2,712
Year ending December 31, 2022	2,162
Year ending December 31, 2023	1,518
Thereafter	813
Total	12,113
Less: present value discount	1,565
Lease liability	10,548
Total
Remaining for year ending December 31, 2019	24,060
Year ending December 31, 2020	45,983
Year ending December 31, 2021	38,649
Year ending December 31, 2022	29,799
Year ending December 31, 2023	22,550
Thereafter	89,990
Total	251,031
Less: present value discount	51,223
Lease liability	199,808
Leases signed but not yet commenced	$ 28,000