Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Total revenues	$ 432,701	$ 389,251	$ 820,683	$ 774,736
Lease revenue	5,759		10,856
Lease revenue		5,416		11,073
Total revenues from contracts with all customers	438,460	394,667	831,539	785,809
Warehouse rent and storage
Disaggregation of Revenue [Line Items]
Total revenues	136,271	119,972	257,580	240,098
Warehouse services
Disaggregation of Revenue [Line Items]
Total revenues	196,216	162,380	359,449	323,169
Third-party managed
Disaggregation of Revenue [Line Items]
Total revenues	61,515	65,705	125,633	129,532
Transportation
Disaggregation of Revenue [Line Items]
Total revenues	36,492	38,889	73,588	77,234
Other
Disaggregation of Revenue [Line Items]
Total revenues	2,207	2,305	4,433	4,703
United States
Disaggregation of Revenue [Line Items]
Total revenues	365,225	316,879	683,826	627,965
Lease revenue	5,677		10,774
Lease revenue		5,416		11,073
Total revenues from contracts with all customers	370,902	322,295	694,600	639,038
United States | Warehouse rent and storage
Disaggregation of Revenue [Line Items]
Total revenues	121,811	104,977	228,635	209,337
United States | Warehouse services
Disaggregation of Revenue [Line Items]
Total revenues	162,529	128,057	291,418	253,305
United States | Third-party managed
Disaggregation of Revenue [Line Items]
Total revenues	53,518	57,606	110,532	113,622
United States | Transportation
Disaggregation of Revenue [Line Items]
Total revenues	25,160	23,934	48,808	46,998
United States | Other
Disaggregation of Revenue [Line Items]
Total revenues	2,207	2,305	4,433	4,703
Australia
Disaggregation of Revenue [Line Items]
Total revenues	52,852	56,368	107,905	114,593
Lease revenue	82		82
Lease revenue		0		0
Total revenues from contracts with all customers	52,934	56,368	107,987	114,593
Australia | Warehouse rent and storage
Disaggregation of Revenue [Line Items]
Total revenues	9,236	9,605	18,604	19,945
Australia | Warehouse services
Disaggregation of Revenue [Line Items]
Total revenues	29,497	29,329	59,495	59,766
Australia | Third-party managed
Disaggregation of Revenue [Line Items]
Total revenues	3,348	3,373	6,208	6,622
Australia | Transportation
Disaggregation of Revenue [Line Items]
Total revenues	10,771	14,061	23,598	28,260
Australia | Other
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
New Zealand
Disaggregation of Revenue [Line Items]
Total revenues	7,578	8,223	15,164	16,416
Lease revenue	0		0
Lease revenue		0		0
Total revenues from contracts with all customers	7,578	8,223	15,164	16,416
New Zealand | Warehouse rent and storage
Disaggregation of Revenue [Line Items]
Total revenues	4,068	3,955	8,049	7,827
New Zealand | Warehouse services
Disaggregation of Revenue [Line Items]
Total revenues	3,407	4,099	6,902	8,216
New Zealand | Third-party managed
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
New Zealand | Transportation
Disaggregation of Revenue [Line Items]
Total revenues	103	169	213	373
New Zealand | Other
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Argentina
Disaggregation of Revenue [Line Items]
Total revenues	2,397	3,055	4,895	6,474
Lease revenue	0		0
Lease revenue		0		0
Total revenues from contracts with all customers	2,397	3,055	4,895	6,474
Argentina | Warehouse rent and storage
Disaggregation of Revenue [Line Items]
Total revenues	1,156	1,435	2,292	2,989
Argentina | Warehouse services
Disaggregation of Revenue [Line Items]
Total revenues	783	895	1,634	1,882
Argentina | Third-party managed
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Argentina | Transportation
Disaggregation of Revenue [Line Items]
Total revenues	458	725	969	1,603
Argentina | Other
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Canada
Disaggregation of Revenue [Line Items]
Total revenues	4,649	4,726	8,893	9,288
Lease revenue	0		0
Lease revenue		0		0
Total revenues from contracts with all customers	4,649	4,726	8,893	9,288
Canada | Warehouse rent and storage
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Canada | Warehouse services
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Canada | Third-party managed
Disaggregation of Revenue [Line Items]
Total revenues	4,649	4,726	8,893	9,288
Canada | Transportation
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Canada | Other
Disaggregation of Revenue [Line Items]
Total revenues	$ 0	$ 0	$ 0	$ 0