Leases (Maturity Analysis of Lease Liabilities) (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Operating Leases
2019 (excluding the six months ended June 30, 2019)	$ 15,849
2020	22,069
2021	15,898
2022	10,550
2023	6,193
Thereafter	10,613
Total lease payments	81,172
Less interest	7,099
Total	74,073
Finance Leases
2019 (excluding the six months ended June 30, 2019)	3,672
2020	15,288
2021	2,162
2022	2,169
2023	2,170
Thereafter	18,331
Total lease payments	43,792
Less interest	4,862
Total	38,930
Total
2019 (excluding the six months ended June 30, 2019)	19,521
2020	37,357
2021	18,060
2022	12,719
2023	8,363
Thereafter	28,944
Total lease payments	124,964
Less interest	11,961
Total lease liabilities	$ 113,003