Leases - Lease Costs (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Finance lease cost:
Amortization of finance lease right-of-use assets	$ 168
Interest expense related to finance lease liabilities	290
Operating lease cost	20,268
Variable lease cost	5,068
Short-term lease cost	164
Total lease cost	25,958
Cash paid for amounts included in the measurement of lease liabilities
Operating cash outflows for finance lease payments	231
Operating cash outflows for operating lease payments	19,226
Total cash flows for lease liability measurement	19,457
Right-of-use assets obtained in exchange for new operating lease liabilities	277,557
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 8,050
Weighted average remaining lease term - finance leases (years)	46 years 10 months 24 days
Weighted average remaining lease term - operating leases (years)	14 years 8 months 12 days
Weighted average discount rate - finance leases	6.07%
Weighted average discount rate - operating leases	3.65%