Leases - Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Paid For Amounts Included In Measurement Of Lease Liabilities [Abstract]
Operating cash outflow from finance leases	$ 4,265	$ 4,994
Financing cash outflow from finance leases	4,049	3,311
Operating cash outflow from operating leases	$ 455	453
Right-of-use assets obtained in exchange for new operating lease liabilities		$ 613