Related Party Transactions - Additional Information (Detail)
$ / shares in Units, CAD in Millions |
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3 Months Ended |
9 Months Ended |
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Oct. 01, 2017
USD ($)
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Feb. 01, 2017
USD ($)
$ / shares
shares
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Oct. 01, 2015
USD ($)
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Sep. 30, 2017
USD ($)
$ / shares
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Sep. 30, 2016
USD ($)
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Sep. 30, 2017
USD ($)
$ / shares
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Sep. 30, 2016
USD ($)
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Feb. 01, 2017
CAD
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Dec. 31, 2016
$ / shares
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| Related Party Transaction [Line Items] |
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| Maximum period for reimbursement of offering cost |
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60 days
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| Maximum offering cost rate |
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3.50%
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| Reimbursement of offering cost |
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$ 0
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| Property operating expenses – affiliates |
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$ 3,307,619
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$ 1,860,606
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8,145,469
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$ 3,776,193
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| Loans outstanding |
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$ 401,414,700
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$ 401,414,700
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| Toronto Merger |
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| Related Party Transaction [Line Items] |
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| Number of self storage facilities |
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5
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| Canada | Tenant Reinsurance [Member] |
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| Related Party Transaction [Line Items] |
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| Business acquisition, percentage of net revenue earned |
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50.00%
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50.00%
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| Class A Common stock |
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| Related Party Transaction [Line Items] |
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| Common Stock, par value | $ / shares |
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$ 0.001
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$ 0.001
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$ 0.001
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| Class T Common stock |
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| Related Party Transaction [Line Items] |
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| Common Stock, par value | $ / shares |
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$ 0.001
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$ 0.001
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$ 0.001
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| Advisory Agreement |
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| Related Party Transaction [Line Items] |
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| Maximum period for reimbursement of offering cost |
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60 days
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| Maximum offering cost rate |
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3.50%
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| Reimbursement of offering cost |
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$ 0
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| Gross proceeds from offering, threshold percentage of expenses for reimbursement |
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15.00%
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15.00%
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| Rate of acquisition fees of purchase price of contract |
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1.75%
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1.75%
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| Monthly asset management fee |
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0.05208%
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| Monthly asset management fee one twelfth of less than one percentage of average invested assets |
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one-twelfth of 0.625%
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| Disposition fees percentage of sale price of property |
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1.00%
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| Operating expenses reimbursement percentage of average investment in assets |
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2.00%
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| Operating expenses reimbursement percentage of net income |
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25.00%
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| Operating expenses exceed limitation |
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12 months
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| Maximum days for disclosure fact |
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60 days
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| Percentage owned by affiliate |
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2.50%
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| Advisory Agreement | Maximum |
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| Related Party Transaction [Line Items] |
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| Commission percentage of sale price of property |
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6.00%
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| Dealer Manager |
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| Related Party Transaction [Line Items] |
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| Maximum dealer manager commission fee percentage of proceeds from Primary Offering |
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3.00%
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| Underwriting commission |
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10.00%
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| Dealer Manager | Class A Common stock |
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| Related Party Transaction [Line Items] |
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| Sale commission fees percentage of proceed from Primary Offering |
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7.00%
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| Dealer Manager | Class T Common stock |
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| Related Party Transaction [Line Items] |
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| Sale commission fees percentage of proceed from Primary Offering |
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2.00%
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| Monthly stockholder servicing fee accrual description |
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accrues daily in an amount equal to 1/365th of 1% of the purchase price per share
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| Primary Offering Dealer Manager Agreement | Class A Common stock |
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| Related Party Transaction [Line Items] |
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| Percentage of gross proceeds from sale of shares |
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10.00%
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| Primary Offering Dealer Manager Agreement | Class T Common stock |
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| Related Party Transaction [Line Items] |
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| Percentage of gross proceeds from sale of shares |
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10.00%
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| SmartStop Asset Management |
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| Related Party Transaction [Line Items] |
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| Percentage of non-voting equity owned |
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15.00%
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| Property Management Agreement |
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| Related Party Transaction [Line Items] |
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| Property management agreement termination description |
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The property management agreements had a three year term and automatically renewed for successive one year periods thereafter, unless we or our Property Manager provided prior written notice at least 90 days prior to the expiration of the term. In general, if we terminated a property management agreement without cause during the initial three year term, we would have been required to pay our Property Manager a termination fee equal to the Set-Up Amount, reduced by 1/36th of the Set-Up Amount for every full month of the term that had elapsed. After the end of the initial three year term, we could have terminated a property management agreement on 30 days prior written notice without payment of a termination fee. Our Property Manager could have terminated a property management agreement on 60 days prior written notice to us.
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| Agreement date |
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Oct. 01, 2015
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| Property Management Agreement | Canada |
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| Related Party Transaction [Line Items] |
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| Percentage of fee of property manager |
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6.00%
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| Construction management fee |
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5.00%
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| Cost of construction or capital improvement work |
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$ 10,000
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| One time fee for property manager |
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3,750
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| Property Management Agreement | Subsequent Event |
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| Related Party Transaction [Line Items] |
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| Agreement termination date |
Oct. 01, 2017
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| Property Management Agreement | Maximum |
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| Related Party Transaction [Line Items] |
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| Signage and set-up costs associated with converting each property to extra space brand |
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$ 25,000
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| Property Management Agreement | Minimum |
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| Related Party Transaction [Line Items] |
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| Property management monthly management fee |
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$ 2,500
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| Property management monthly management fee percentage on gross revenue |
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6.00%
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| Property Management Agreement | Minimum | Canada |
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| Related Party Transaction [Line Items] |
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| Our property management fee |
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$ 3,000
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| Strategic Storage Trust Sub Property Management Limited Liability Company |
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| Related Party Transaction [Line Items] |
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| Property management agreement termination description |
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The sub-property management agreements also had a three year term and automatically renewed for successive one year periods thereafter, unless our Property Manager or Extra Space provided prior written notice at least 90 days prior to the expiration of the term. In general, if our Property Manager terminated a sub-property management agreement without cause during the initial three year term, it would have been required to pay Extra Space a termination fee equal to the Set-Up Amount, reduced by 1/36th of the Set-Up Amount for every full month of the term that had elapsed. After the end of the initial three year term, our Property Manager could have terminated a sub-property management agreement on 30 days prior written notice without payment of a termination fee. Extra Space could have terminated a sub-property management agreement on 60 days prior written notice to our Property Manager
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| Sub property management agreement description |
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Under the sub-property management agreements, our Property Manager paid Extra Space a monthly management fee for each property equal to the greater of $2,500 or 6% of the gross revenues, plus reimbursement of Extra Space’s costs of managing the properties; provided, however that no management fee was due and payable to Extra Space for the months of January and July each year during the term.
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| Strategic Storage Trust Sub Property Management Limited Liability Company | Minimum |
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| Related Party Transaction [Line Items] |
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| Property management monthly management fee |
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$ 2,500
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| Property management monthly management fee percentage on gross revenue |
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6.00%
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| Termination of Sub-property Manager | Property Operating Expenses – Affiliates |
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| Related Party Transaction [Line Items] |
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| Property operating expenses – affiliates |
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$ 800,000
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$ 800,000
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| Termination of Sub-property Manager | Subsequent Event | Property Operating Expenses – Affiliates |
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| Related Party Transaction [Line Items] |
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| Agreement termination date |
Oct. 01, 2017
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| Property Management Agreement |
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| Related Party Transaction [Line Items] |
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| Property management agreement termination description |
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The property management agreements have a three year term and automatically renew for successive one year periods thereafter, unless we or our Property Manager provide prior written notice at least 90 days prior to the expiration of the term. After the end of the initial three year term, either party may terminate a property management agreement generally upon 60 days prior written notice.
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| Property Management Agreement | Subsequent Event |
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| Related Party Transaction [Line Items] |
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| Agreement amendment effective date |
Oct. 01, 2017
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| Percentage of fee of property manager |
6.00%
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| Construction management fee |
5.00%
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| Cost of construction or capital improvement work |
$ 10,000
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| One time fee for property manager |
3,750
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| Property Management Agreement | Minimum | Subsequent Event |
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| Related Party Transaction [Line Items] |
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| Our property management fee |
$ 3,000
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| Property Manager | Canada |
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| Related Party Transaction [Line Items] |
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| Business acquisition, percentage of net revenue earned |
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50.00%
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50.00%
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| SS Toronto | Toronto Merger |
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| Related Party Transaction [Line Items] |
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| Common Stock, par value | $ / shares |
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$ 0.001
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| Consideration per share of common stock | $ / shares |
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$ 11.0651
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| Business acquisition cash consideration transferred |
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$ 7,300,000
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| Loans outstanding |
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38,400,000
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CAD 50.1
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| Acquisition fees incurred to the advisor |
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0
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| Acquisition assumed other net liabilities |
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$ 800,000
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| SS Toronto | Toronto Merger | Term Loan |
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| Related Party Transaction [Line Items] |
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| Guarantee obligations | CAD |
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34.8
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| SS Toronto | Toronto Merger | Promissory Notes |
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| Related Party Transaction [Line Items] |
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| Guarantee obligations | CAD |
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CAD 17.7
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| SS Toronto | Toronto Merger | Class A Units of Operating Partnership |
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| Related Party Transaction [Line Items] |
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| Operating partnership units issued per share of common stock |
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73.11%
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| Business acquisition partnership units issued | shares |
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483,197
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