Quarterly report pursuant to Section 13 or 15(d)

Property Portfolio (Gross Investment) (Details)

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Property Portfolio (Gross Investment) (Details) - USD ($)
$ in Thousands
 1 Months Ended 9 Months Ended
Aug. 03, 2018
Jul. 03, 2018
Mar. 02, 2018
Feb. 23, 2018
Sep. 30, 2018
Property, Plant and Equipment [Line Items]          
Beginning Balance         $ 471,507
Acquisitions [1]         141,530
Ending Balance         613,037
Moline / Silvis Facility [Member]          
Property, Plant and Equipment [Line Items]          
Tenant improvements [2]         2,043
Acquisitions         7,100
Freemont Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         8,497
Gainesville Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions       $ 10,500 10,510
Dallas Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions     $ 23,300   23,284
Orlando Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         16,414
Belpre Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         64,683
McAllen Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions   $ 5,400     5,395
Derby Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions $ 3,600       3,604
Land [Member]          
Property, Plant and Equipment [Line Items]          
Beginning Balance         42,701
Acquisitions [1]         14,138
Ending Balance         56,839
Land [Member] | Moline / Silvis Facility [Member]          
Property, Plant and Equipment [Line Items]          
Tenant improvements [2]         0
Acquisitions         0
Land [Member] | Freemont Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         162
Land [Member] | Gainesville Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         625
Land [Member] | Dallas Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         6,272
Land [Member] | Orlando Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         2,543
Land [Member] | Belpre Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         3,025
Land [Member] | McAllen Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         1,099
Land [Member] | Derby Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         412
Building [Member]          
Property, Plant and Equipment [Line Items]          
Beginning Balance         384,338
Acquisitions [1]         109,165
Ending Balance         493,503
Building [Member] | Moline / Silvis Facility [Member]          
Property, Plant and Equipment [Line Items]          
Tenant improvements [2]         0
Acquisitions         4,895
Building [Member] | Freemont Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         8,335
Building [Member] | Gainesville Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         9,885
Building [Member] | Dallas Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         17,012
Building [Member] | Orlando Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         11,720
Building [Member] | Belpre Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         50,526
Building [Member] | McAllen Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         4,296
Building [Member] | Derby Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         2,496
Site And Tenant Improvements [Member]          
Property, Plant and Equipment [Line Items]          
Beginning Balance         12,818
Acquisitions [1]         8,224
Ending Balance         21,042
Site And Tenant Improvements [Member] | Moline / Silvis Facility [Member]          
Property, Plant and Equipment [Line Items]          
Tenant improvements [2]         2,043
Acquisitions         1,216
Site And Tenant Improvements [Member] | Freemont Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         0
Site And Tenant Improvements [Member] | Gainesville Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         0
Site And Tenant Improvements [Member] | Dallas Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         0
Site And Tenant Improvements [Member] | Orlando Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         756
Site And Tenant Improvements [Member] | Belpre Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         3,966
Site And Tenant Improvements [Member] | McAllen Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions        
Site And Tenant Improvements [Member] | Derby Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         243
Intangibles [Member]          
Property, Plant and Equipment [Line Items]          
Beginning Balance         31,650
Acquisitions [1]         10,003
Ending Balance         41,653
Intangibles [Member] | Moline / Silvis Facility [Member]          
Property, Plant and Equipment [Line Items]          
Tenant improvements [2]         0
Acquisitions         989
Intangibles [Member] | Freemont Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         0
Intangibles [Member] | Gainesville Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         0
Intangibles [Member] | Dallas Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         0
Intangibles [Member] | Orlando Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         1,395
Intangibles [Member] | Belpre Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         7,166
Intangibles [Member] | McAllen Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions        
Intangibles [Member] | Derby Facility [Member]          
Property, Plant and Equipment [Line Items]          
Acquisitions         $ 453
[1] The Belpre acquisition included $4,742 of OP Units issued as part of the total consideration for the transaction. As indicated in (1) above, $2,043 of completed construction-in-process costs were reclassified to investment in real estate during the three months ended September 30, 2018. Additionally, an aggregate of $894 of intangible liabilities were acquired from the acquisitions that occurred during the nine months ended September 30, 2018. Accordingly, the total addition to gross investment in real estate funded with cash was $133,851.
[2] Represents tenant improvements that were completed and placed in service during the three months ended September 30, 2018 related to the Silvis and Sherman facilities that were acquired in January 2018 and June 2017, respectively. These amounts were recorded as construction-in-process within the “Other Assets” line item in the Company’s Consolidated Balance Sheet as of June 30, 2018, and reclassified to investment in real estate once completed.