Leases (Summary of Maturity of Lease Liabilities) (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Operating Leases
2019	$ 10,042
2020	38,735
2021	32,446
2022	34,045
2023	34,590
Thereafter	122,817
Total lease payments	272,675
Less: Interest	46,150
Present value of lease liabilities	226,525
Finance Leases
2019	1,627
2020	5,813
2021	4,339
2022	4,364
2023	4,390
Thereafter	9,559
Total lease payments	30,092
Less: Interest	8,017
Present value of lease liabilities	22,075
Total
2019	11,669
2020	44,548
2021	36,785
2022	38,409
2023	38,980
Thereafter	132,376
Total lease payments	302,767
Less: Interest	54,167
Present value of lease liabilities	$ 248,600