Lease Accounting - Lessee, Lease Expenses (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) warehouse	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease cost	$ 23,931	$ 29,205
Financing lease cost:
Depreciation	16,504	11,252
Interest on lease liabilities	2,969	2,941
Sublease income	(551)	(499)
Net lease expense	$ 42,853	42,899
Number of properties subleased | warehouse	2
Rent expense		$ 36,700