Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands					3 Months Ended				9 Months Ended
		Aug. 31, 2020	Nov. 19, 2019	Feb. 01, 2019	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets					$ 2,615	$ 0			$ 6,282	$ 13,485
Interest capitalized					1,000	700			2,200	2,300
Compensation and travel expense capitalized					200	100			600	400
Payments for asset acquisitions									25,538	35,161
Equity					(2,108,872)	(1,838,579)	$ (1,855,657)	$ (680,477)	(2,108,872)	(1,838,579)	$ (2,131,006)	$ (2,020,676)	$ (1,833,018)	$ (706,755)
Assets under new accounting pronouncement					426,800				426,800
Accounts receivable – net of allowance					12,452				12,452				6,927
Third-party managed
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets									2,600
Other
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets									3,700
Port Fresh Holdings, LLC
Property, Plant and Equipment [Line Items]
Payments for asset acquisitions				$ 35,200
MHW Group Inc.
Property, Plant and Equipment [Line Items]
Payments for asset acquisitions			$ 50,800
Property, plant and equipment			50,100
Intangible assets			600
Other assets (liabilities), net			100
Call option to purchase land			$ 4,100
Caspers Cold Storage
Property, Plant and Equipment [Line Items]
Payments for asset acquisitions		$ 25,500
Partially Used Warehouse
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets										$ 9,600
Percentage of facility to be demolished										75.00%
Idle Warehouse
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets								2,900
Transportation assets
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets							900
Cumulative Effect, Period of Adoption, Adjustment
Property, Plant and Equipment [Line Items]
Equity	[1]												500
Retained Earnings
Property, Plant and Equipment [Line Items]
Equity					$ 797,935	$ 718,874	$ 707,170	$ 673,297	$ 797,935	$ 718,874	$ 767,027	$ 756,418	736,861	$ 638,345
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment
Property, Plant and Equipment [Line Items]
Equity	[1]												$ 500

[1] Refer to Note 2 to the Condensed Consolidated Financial Statements for further discussion of the adoption of ASC 326.