Schedule III - Real Estate and Related Depreciation (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) ft²
Real Estate And Accumulated Depreciation [Line Items]
Square Footage | ft²	755,971
Initial cost, Land	$ 5,493,814
Initial cost, Buildings & Improvements	49,129,195
Costs Subsequent to Acquisition	2,590,647
Gross Carrying Amount, Land	5,493,814
Gross Carrying Amount, Buildings & Improvements	50,831,333
Total	56,325,147
Accumulated Depreciation	$ 872,987
Clinton, CT
Real Estate And Accumulated Depreciation [Line Items]
Square Footage | ft²	31,059
Initial cost, Land	$ 356,040
Initial cost, Buildings & Improvements	3,108,285
Gross Carrying Amount, Land	356,040
Gross Carrying Amount, Buildings & Improvements	3,108,285
Total	3,464,325
Accumulated Depreciation	$ 211
Year Acquired	2016
Bolingbrook, IL
Real Estate And Accumulated Depreciation [Line Items]
Square Footage | ft²	110,600	[1]
Initial cost, Land	$ 633,914	[1]
Initial cost, Buildings & Improvements	5,491,409	[1]
Costs Subsequent to Acquisition	2,422,760	[1]
Gross Carrying Amount, Land	633,914	[1]
Gross Carrying Amount, Buildings & Improvements	7,914,169	[1]
Total	8,548,083	[1]
Accumulated Depreciation	$ 178,620	[1]
Year Acquired	2013	[1]
Dolton, IL
Real Estate And Accumulated Depreciation [Line Items]
Square Footage | ft²	86,725	[1]
Initial cost, Land	$ 614,413	[1]
Initial cost, Buildings & Improvements	5,227,313	[1]
Costs Subsequent to Acquisition	9,611	[1]
Gross Carrying Amount, Land	614,413	[1]
Gross Carrying Amount, Buildings & Improvements	5,236,924	[1]
Total	5,851,337	[1]
Accumulated Depreciation	$ 141,594	[1]
Year Acquired	2013	[1]
McCordsville, IN
Real Estate And Accumulated Depreciation [Line Items]
Square Footage | ft²	81,471
Initial cost, Land	$ 770,000
Initial cost, Buildings & Improvements	6,776,000
Costs Subsequent to Acquisition	14,573
Gross Carrying Amount, Land	770,000
Gross Carrying Amount, Buildings & Improvements	6,790,573
Total	7,560,573
Accumulated Depreciation	$ 44,703
Year Acquired	2016
Merrillville, IN
Real Estate And Accumulated Depreciation [Line Items]
Square Footage | ft²	71,720	[1]
Initial cost, Land	$ 597,229	[1]
Initial cost, Buildings & Improvements	6,104,011	[1]
Costs Subsequent to Acquisition	94,605	[1]
Gross Carrying Amount, Land	597,229	[1]
Gross Carrying Amount, Buildings & Improvements	5,198,616	[1]
Total	5,795,845	[1]
Accumulated Depreciation	$ 133,910	[1]
Year Acquired	2013	[1]
Rochester, NY
Real Estate And Accumulated Depreciation [Line Items]
Square Footage | ft²	68,017	[1]
Initial cost, Land	$ 571,583	[1]
Initial cost, Buildings & Improvements	5,227,630	[1]
Gross Carrying Amount, Land	571,583	[1]
Gross Carrying Amount, Buildings & Improvements	5,227,630	[1]
Total	5,799,213	[1]
Accumulated Depreciation	$ 102,071	[1]
Year Acquired	2012	[1]
Lima, OH
Real Estate And Accumulated Depreciation [Line Items]
Square Footage | ft²	97,801
Initial cost, Land	$ 530,000
Initial cost, Buildings & Improvements	4,664,000
Costs Subsequent to Acquisition	28,898
Gross Carrying Amount, Land	530,000
Gross Carrying Amount, Buildings & Improvements	4,692,898
Total	5,222,898
Accumulated Depreciation	$ 39,867
Year Acquired	2016
Sadsburyville, PA
Real Estate And Accumulated Depreciation [Line Items]
Square Footage | ft²	79,004
Initial cost, Land	$ 462,749
Initial cost, Buildings & Improvements	5,146,679
Gross Carrying Amount, Land	462,749
Gross Carrying Amount, Buildings & Improvements	5,146,579
Total	5,609,328
Accumulated Depreciation	$ 133,153
Year Acquired	2012
Tuxis Self Storage I LLC | Millbrook, NY
Real Estate And Accumulated Depreciation [Line Items]
Square Footage | ft²	13,391
Initial cost, Land	$ 313,950
Initial cost, Buildings & Improvements	2,723,468
Gross Carrying Amount, Land	313,950
Gross Carrying Amount, Buildings & Improvements	2,723,468
Total	3,037,418
Accumulated Depreciation	$ 184
Year Acquired	2016
Tuxis Real Estate II LLC | Millbrook, NY
Real Estate And Accumulated Depreciation [Line Items]
Square Footage | ft²	1,875
Initial cost, Land	$ 110,010
Initial cost, Buildings & Improvements	177,427
Gross Carrying Amount, Land	110,010
Gross Carrying Amount, Buildings & Improvements	177,427
Total	287,437
Accumulated Depreciation	$ 60
Year Acquired	2016
SSG Summerville I LLC | Summerville, SC
Real Estate And Accumulated Depreciation [Line Items]
Square Footage | ft²	72,700	[1]
Initial cost, Land	$ 345,160	[1]
Initial cost, Buildings & Improvements	2,989,159	[1]
Costs Subsequent to Acquisition	5,475	[1]
Gross Carrying Amount, Land	345,160	[1]
Gross Carrying Amount, Buildings & Improvements	2,994,634	[1]
Total	3,339,794	[1]
Accumulated Depreciation	$ 63,506	[1]
Year Acquired	2013	[1]
SSG Summerville II LLC | Summerville, SC
Real Estate And Accumulated Depreciation [Line Items]
Square Footage | ft²	41,608	[1]
Initial cost, Land	$ 188,766	[1]
Initial cost, Buildings & Improvements	1,493,814	[1]
Costs Subsequent to Acquisition	14,725	[1]
Gross Carrying Amount, Land	188,766	[1]
Gross Carrying Amount, Buildings & Improvements	1,620,130	[1]
Total	1,808,896	[1]
Accumulated Depreciation	$ 35,108	[1]
Year Acquired	2013	[1]

[1] This store is part of the Loan Agreement with at balance of $19,374,971 as of December 31, 2016.