Schedule III - Real Estate and Accumulated Depreciation - Footnotes (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2018 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($) warehouse	Dec. 31, 2016 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Reconciliation of total Buildings and Improvements to consolidated balance sheet as of December 31, 2018:
Property, plant, and equipment						$ 2,898,139	$ 2,810,623
Capitalized leases – gross						60,503	76,216
Reconciliation of total mortgage notes and term loans to consolidated balance sheet caption as of December 31, 2018:
Unsecured						1,075,000
Deferred financing and discount, net of amortization						(13,943)
Total mortgage notes and term loans per consolidated balance sheet						1,351,014	1,721,958
Aggregate cost for federal tax purposes of real estate assets						2,100,000
Real Estate Facilities, at Cost:
Beginning Balance			$ 2,506,656	$ 2,382,343	$ 2,379,980
Capital expenditures			50,680	52,555	46,761
Acquisitions			0	27,958	8,922
Newly developed warehouse facilities			62,353	60,598	0
Disposition			(30,199)	(20,780)	(36,628)
Impairment			(747)	(9,473)	(9,820)
Conversion of leased assets to owned			8,405	0	(5,331)
Impact of foreign exchange rate changes			(21,781)	13,455	(1,541)
Ending Balance	$ 2,575,367		2,575,367	2,506,656	2,382,343
Accumulated Depreciation:
Beginning balance			770,006	692,390	629,404
Depreciation expense			(87,355)	(86,169)	(85,296)
Dispositions			24,672	11,143	21,885
Impact of foreign exchange rate changes			4,797	(2,590)	425
Ending balance	827,892		827,892	770,006	692,390
Total Real Estate Facilities, Net at December 31						1,747,475	1,736,650	$ 1,689,953
Assets under sale-leaseback agreements						80,300	90,500	91,600
Gain (loss) on disposition of property			7,471	43	11,598
Intangible assets acquired			0	3,921
Reconciliation of Real Estate Activity
Real estate facilities, at cost						2,575,367
Reconciliation of total accumulated depreciation and depletion to consolidated balance sheet caption
Accumulated depreciation and depletion per Schedule III	(827,892)		(770,006)	(692,390)	$ (629,404)	(827,892)	(770,006)	(692,390)
Total accumulated depreciation and depletion per consolidated balance sheet (property, plant and equipment and capital leases)						(1,118,941)
Non-real estate assets
Reconciliation of total accumulated depreciation and depletion to consolidated balance sheet caption
Total accumulated depreciation and depletion per consolidated balance sheet (property, plant and equipment and capital leases)						(449,024)
Buildings and improvements
Reconciliation of total Buildings and Improvements to consolidated balance sheet as of December 31, 2018:
Property, plant, and equipment						1,849,749	1,819,635
Capitalized leases – gross						11,227	16,827
Assets under construction
Reconciliation of total Buildings and Improvements to consolidated balance sheet as of December 31, 2018:
Property, plant, and equipment						85,983	48,868
Personal property assets under construction
Reconciliation of total Buildings and Improvements to consolidated balance sheet as of December 31, 2018:
Property, plant, and equipment						4,758
Warehouses
Accumulated Depreciation:
Gain (loss) on disposition of property	(900)	$ 8,400
New facility acquired	13,800			31,900
Operating facilities disposed				$ 9,200
Idle Warehouse
Accumulated Depreciation:
Gain (loss) on disposition of property	(900)
Number of facilities disposed | warehouse				2
Operating Warehouses
Accumulated Depreciation:
Number of facilities disposed | warehouse				1
Refrigeration Equipment
Reconciliation of Real Estate Activity
Real estate facilities, at cost						261,103
Reconciliation of total accumulated depreciation and depletion to consolidated balance sheet caption
Total accumulated depreciation and depletion per consolidated balance sheet (property, plant and equipment and capital leases)						(160,916)
Quarry Assets
Reconciliation of Real Estate Activity
Real estate facilities, at cost						13,166
Reconciliation of total accumulated depreciation and depletion to consolidated balance sheet caption
Total accumulated depreciation and depletion per consolidated balance sheet (property, plant and equipment and capital leases)						(2,941)
Real Estate
Accumulated Depreciation:
Operating facilities disposed			30,199	$ 20,780
Reconciliation of Real Estate Activity
Real estate facilities, at cost						2,575,367	2,506,656	2,382,343
Reconciliation of total accumulated depreciation and depletion to consolidated balance sheet caption
Total accumulated depreciation and depletion per consolidated balance sheet (property, plant and equipment and capital leases)						(827,892)	(770,006)	$ (692,390)
In-place and above market lease
Accumulated Depreciation:
Intangible assets acquired				$ 3,900
Disposal Group, Held-for-sale, Not Discontinued Operations | Idle Warehouse
Accumulated Depreciation:
Facility held for sale							$ 2,600
Assets Not Under Construction and Under Construction
Reconciliation of total Buildings and Improvements to consolidated balance sheet as of December 31, 2018:
Total per Schedule III						1,942,201
Reconciliation of total mortgage notes and term loans to consolidated balance sheet caption as of December 31, 2018:
Total per Schedule III						289,957
Accumulated Depreciation:
Ending balance	669,917		669,917
Reconciliation of Real Estate Activity
Total real estate facilities gross amount per Schedule III						2,327,430
Reconciliation of total accumulated depreciation and depletion to consolidated balance sheet caption
Accumulated depreciation and depletion per Schedule III	$ (669,917)		$ (669,917)			(669,917)
Assets Under Construction
Reconciliation of total Buildings and Improvements to consolidated balance sheet as of December 31, 2018:
Total per Schedule III						$ 1,942,201