Quarterly report pursuant to Section 13 or 15(d)

Property Portfolio (Gross Investment) (Details)

v3.7.0.1
Property Portfolio (Gross Investment) (Details) - USD ($)
 1 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 27, 2017
Jun. 30, 2017
Property, Plant and Equipment [Line Items]      
Beginning Balance     $ 206,597,373
Acquisitions     148,474,478
Ending Balance $ 355,071,851   355,071,851
Oklahoma City Facilities [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     49,500,000
Great Bend Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     24,637,687
Clermont Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     5,225,000
Prescott Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     4,612,054
Las Cruces Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     5,015,406
Cape Coral Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     7,369,860
Lewisburg facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     7,300,000
Flower Mound Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions   $ 4,050,000 4,050,000
Brockport Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions   $ 8,670,000 8,670,000
Sherman facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions 26,000,000   26,611,821
Sandusky facility1 [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     1,075,839
Sandusky facility2 [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     4,406,811
Land [Member]      
Property, Plant and Equipment [Line Items]      
Beginning Balance     17,785,001
Acquisitions     8,037,452
Ending Balance 25,822,453   25,822,453
Land [Member] | Oklahoma City Facilities [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     2,086,885
Land [Member] | Great Bend Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     836,929
Land [Member] | Clermont Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     0
Land [Member] | Prescott Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     790,637
Land [Member] | Las Cruces Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     397,148
Land [Member] | Cape Coral Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     353,349
Land [Member] | Lewisburg facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     471,184
Land [Member] | Flower Mound Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     580,763
Land [Member] | Brockport Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     412,838
Land [Member] | Sherman facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     1,600,711
Land [Member] | Sandusky facility1 [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     97,804
Land [Member] | Sandusky facility2 [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     409,204
Investment Subtotal [Member]      
Property, Plant and Equipment [Line Items]      
Beginning Balance     199,689,686
Acquisitions     138,443,327
Ending Balance 338,133,013   338,133,013
Investment Subtotal [Member] | Oklahoma City Facilities [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     41,677,324
Investment Subtotal [Member] | Great Bend Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     24,637,687
Investment Subtotal [Member] | Clermont Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     4,566,950
Investment Subtotal [Member] | Prescott Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     4,612,054
Investment Subtotal [Member] | Las Cruces Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     5,015,406
Investment Subtotal [Member] | Cape Coral Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     7,369,860
Investment Subtotal [Member] | Lewisburg facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     6,795,047
Investment Subtotal [Member] | Flower Mound Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     3,884,786
Investment Subtotal [Member] | Brockport Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     7,789,742
Investment Subtotal [Member] | Sherman facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     26,611,821
Investment Subtotal [Member] | Sandusky facility1 [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     1,075,839
Investment Subtotal [Member] | Sandusky facility2 [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     4,406,811
Intangibles [Member]      
Property, Plant and Equipment [Line Items]      
Beginning Balance [1]     6,907,687
Acquisitions [1]     10,031,151
Ending Balance [1] 16,938,838   16,938,838
Intangibles [Member] | Oklahoma City Facilities [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions [1]     7,822,676
Intangibles [Member] | Great Bend Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions [1]     0
Intangibles [Member] | Clermont Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions [1]     658,050
Intangibles [Member] | Prescott Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions [1]     0
Intangibles [Member] | Las Cruces Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions [1]     0
Intangibles [Member] | Cape Coral Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions [1]     0
Intangibles [Member] | Lewisburg facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions [1]     504,953
Intangibles [Member] | Flower Mound Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions [1]     165,214
Intangibles [Member] | Brockport Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions [1]     880,258
Intangibles [Member] | Sherman facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions [1]     0
Intangibles [Member] | Sandusky facility1 [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions [1]     0
Intangibles [Member] | Sandusky facility2 [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions [1]     0
Building And Tenant Improvements [Member]      
Property, Plant and Equipment [Line Items]      
Beginning Balance     2,651,287
Acquisitions     3,460,664
Ending Balance 6,111,951   6,111,951
Building And Tenant Improvements [Member] | Oklahoma City Facilities [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     1,876,730
Building And Tenant Improvements [Member] | Great Bend Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     0
Building And Tenant Improvements [Member] | Clermont Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     205,922
Building And Tenant Improvements [Member] | Prescott Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     0
Building And Tenant Improvements [Member] | Las Cruces Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     0
Building And Tenant Improvements [Member] | Cape Coral Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     0
Building And Tenant Improvements [Member] | Lewisburg facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     504,726
Building And Tenant Improvements [Member] | Flower Mound Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     381,859
Building And Tenant Improvements [Member] | Brockport Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     491,427
Building And Tenant Improvements [Member] | Sherman facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     0
Building And Tenant Improvements [Member] | Sandusky facility1 [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     0
Building And Tenant Improvements [Member] | Sandusky facility2 [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     0
Building [Member]      
Property, Plant and Equipment [Line Items]      
Beginning Balance     179,253,398
Acquisitions     126,945,211
Ending Balance $ 306,198,609   306,198,609
Building [Member] | Oklahoma City Facilities [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     37,713,709
Building [Member] | Great Bend Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     23,800,758
Building [Member] | Clermont Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     4,361,028
Building [Member] | Prescott Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     3,821,417
Building [Member] | Las Cruces Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     4,618,258
Building [Member] | Cape Coral Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     7,016,511
Building [Member] | Lewisburg facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     5,819,137
Building [Member] | Flower Mound Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     2,922,164
Building [Member] | Brockport Facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     6,885,477
Building [Member] | Sherman facility [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     25,011,110
Building [Member] | Sandusky facility1 [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     978,035
Building [Member] | Sandusky facility2 [Member]      
Property, Plant and Equipment [Line Items]      
Acquisitions     $ 3,997,607
[1] Represents intangible assets acquired net of intangible liabilities acquired.