Leases (Other Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Operating Leases:
ROU assets recorded under operating leases	$ 224,627		$ 220,865
Accumulated amortization associated with operating leases	(42,163)		(34,647)
Total operating leases ROU assets, net	182,464		186,218
Operating lease liabilities	36,841		36,108
Liabilities recorded under operating leases (non-current)	147,031		151,523
Total operating leases liabilities	183,872		187,631
Operating lease expense	14,470	$ 15,209
Variable lease expense	2,172	1,575
Total operating lease expense	16,642	16,784
Finance Leases:
ROU assets recorded under finance leases	19,761		19,606
Accumulated depreciation associated with finance leases	(7,952)		(7,551)
Total finance leases ROU assets, net	11,809		12,055
Total finance lease liabilities	11,700		$ 11,788
Amortization of finance lease ROU assets	1,305	1,157
Interest on lease liabilities	233	78
Total finance lease expense	$ 1,538	$ 1,235