Leases (Maturity Analysis of Lease Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Operating Leases
2021	$ 21,262	$ 28,145
2022	14,698	19,230
2023	10,389	13,574
2024	5,552	9,887
2025	2,233	5,567
Thereafter	7,067	6,956
Total lease payments	61,201	83,359
Less: interest	4,449	6,568
Total	56,752	76,791
Finance Leases
2021	3,995	18,185
2022	4,002	2,334
2023	4,003	2,341
2024	3,875	2,342
2025	2,931	2,176
Thereafter	26,547	16,154
Total lease payments	45,353	43,532
Less: interest	6,045	4,395
Total	39,308	39,137
Total
2021	25,257	46,330
2022	18,700	21,564
2023	14,392	15,915
2024	9,427	12,229
2025	5,164	7,743
Thereafter	33,614	23,110
Total lease payments	106,554	126,891
Less: interest	10,494	10,963
Total lease liabilities	$ 96,060	$ 115,928