Leases - Lease Cost (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Operating lease cost
Operating lease expense	$ 1,163	$ 2,279
Interest on lease liabilities	795	1,535
Amortization of right-of-use assets	51	51
Interest on lease liabilities	196	196
Lease, Cost	2,205	4,061
Other information
Operating cash flows outflows related to operating leases	1,402	4,173
Financing cash flows outflows related to financing leases	142	142
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 0
Right-of-use assets obtained in exchange for new finance lease liabilities		$ 14,294
Weighted-average remaining lease term - operating leases	54 years 6 months	54 years 6 months
Weighted-average remaining lease term - finance leases	70 years 3 months 18 days	70 years 3 months 18 days
Weighted-average discount rate - operating leases (percent)	5.50%	5.50%
Weighted-average discount rate - finance leases (percent)	5.90%	5.90%