Leases - Lease Costs (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease costs	$ 17,015
Amortization of right-of-use assets, financing leases	309
Interest expense for financing lease liabilities	6,557
Total financing lease costs	6,866
Variable lease costs	4,399
Operating cash flows used in operating leases	(16,121)
Operating cash flows used in financing leases	(5,585)
Financing cash flows provided by financing leases	971
Right-of-use assets reduced through lease modifications and reassessments	2,717
Right-of-use assets obtained in exchange for operating lease liabilities	$ 34,014
Operating leases, remaining lease term	12 years
Finance leases, remaining lease term	33 years
Operating leases, discount rate	9.70%
Finance leases, discount rate	17.20%