Leases - Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Lessee Disclosure [Abstract]
Cash paid for operating leases included in operating activities	$ 43,543	$ 39,239
Cash paid for finance leases included in operating activities	314	596
Cash paid for finance leases included in financing activities	3,236	4,544
Operating lease right-of-use assets obtained in exchange for lease obligations	$ 45,474	54,053
Operating lease right-of-use assets and liabilities relieved in conjunction with divestiture		$ 2,018