Leases - Cash Flow (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash paid for amounts included in the measurement of liabilities
Financing cash flows from finance leases	$ 388	$ 342
Operating cash flows from finance leases	162	156
Operating cash flows from operating leases	24,986	21,045
Non-cash supplemental amounts
ROU assets obtained in exchange for new finance lease liabilities	1,590	0
ROU assets obtained in exchange for new operating lease liabilities	2,996	14,130
ROU assets terminated in exchange for release from operating lease liabilities	$ 7,738	$ 0