Leases - Supplemental Cash Flow and Other Information Related to Leases (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash paid for the amounts included in the measurements of lease liabilities:
Operating cash outflows from operating leases	$ 9,753	$ 10,154
Operating cash outflows from finance leases	13	28
Financing cash outflow from finance leases	445	588
ROU assets obtained in exchange for lease liabilities incurred:
Operating leases	$ 532	$ 3,198