Quarterly report pursuant to Section 13 or 15(d)

Investment in Storage Facilities and Intangible Assets - Schedule of Purchase Price of Facilities Acquired (Detail)

v3.19.1
Investment in Storage Facilities and Intangible Assets - Schedule of Purchase Price of Facilities Acquired (Detail)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
Property
Investment Holdings [Line Items]  
Number of Properties | Property 2
Purchase Price $ 66,471
Consideration paid, Cash Paid 55,624
Consideration paid, Carrying Value of Noncontrolling Interest in Joint Venture 10,715
Consideration paid, Net Other Liabilities (Assets) Assumed 132
Acquisition Date Fair Value, In-Place Customer Leases 385
Land [Member]  
Investment Holdings [Line Items]  
Acquisition Date Fair Value, Fixed Assets 31,846
Building, Equipment and Improvements [Member]  
Investment Holdings [Line Items]  
Acquisition Date Fair Value, Fixed Assets $ 34,240
NY [Member] | Asset Acquired on 1/16/2019 [Member]  
Investment Holdings [Line Items]  
Number of Properties | Property 1
Date of Acquisition Jan. 16, 2019
Purchase Price $ 57,169
Consideration paid, Cash Paid 46,402
Consideration paid, Carrying Value of Noncontrolling Interest in Joint Venture 10,715
Consideration paid, Net Other Liabilities (Assets) Assumed 52
Acquisition Date Fair Value, In-Place Customer Leases 277
NY [Member] | Asset Acquired on 1/16/2019 [Member] | Land [Member]  
Investment Holdings [Line Items]  
Acquisition Date Fair Value, Fixed Assets 30,029
NY [Member] | Asset Acquired on 1/16/2019 [Member] | Building, Equipment and Improvements [Member]  
Investment Holdings [Line Items]  
Acquisition Date Fair Value, Fixed Assets $ 26,863
Florida [Member] | Asset Acquired on 3/8/2019 [Member]  
Investment Holdings [Line Items]  
Number of Properties | Property 1
Date of Acquisition Mar. 08, 2019
Purchase Price $ 9,302
Consideration paid, Cash Paid 9,222
Consideration paid, Net Other Liabilities (Assets) Assumed 80
Acquisition Date Fair Value, In-Place Customer Leases 108
Florida [Member] | Asset Acquired on 3/8/2019 [Member] | Land [Member]  
Investment Holdings [Line Items]  
Acquisition Date Fair Value, Fixed Assets 1,817
Florida [Member] | Asset Acquired on 3/8/2019 [Member] | Building, Equipment and Improvements [Member]  
Investment Holdings [Line Items]  
Acquisition Date Fair Value, Fixed Assets $ 7,377