Quarterly report pursuant to Section 13 or 15(d)

Real Estate and Intangible Assets - Summary of Lease on Property (Detail)

v3.5.0.2
Real Estate and Intangible Assets - Summary of Lease on Property (Detail)
$ in Thousands
 9 Months Ended
Sep. 30, 2016
USD ($)
ft²
property
option
Sep. 30, 2015
USD ($)
ft²
property
option
Real Estate Properties [Line Items]    
Number of leased properties | property 7  
Number of properties acquired | property 2 5
Square Footage (unaudited) | ft²   203,538
Renewal Options | option   2
Renewal options period   5 years
Annualized GAAP Rent   $ 3,183
Tenant Improvement   1,530
Leasing Commissions   $ 722
Maple Heights, OH [Member]    
Real Estate Properties [Line Items]    
Lease Commencement Date Jun. 01, 2016  
Square Footage (unaudited) | ft² 40,606  
Renewal Options | option 2  
Renewal options period 3 years  
Annualized GAAP Rent $ 109  
Tenant Improvement 0  
Leasing Commissions $ 34  
Lease term 5 years 2 months 12 days  
Bolingbrook, IL [Member]    
Real Estate Properties [Line Items]    
Lease Commencement Date Jul. 01, 2016  
Square Footage (unaudited) | ft² 13,816  
Renewal Options | option 1  
Renewal options period 5 years  
Annualized GAAP Rent $ 70  
Tenant Improvement 69  
Leasing Commissions $ 28  
Lease term 7 years 2 months 12 days  
Richmond, Virginia [Member]    
Real Estate Properties [Line Items]    
Square Footage (unaudited) | ft² 42,213  
Annualized GAAP Rent $ 228  
Tenant Improvement 0  
Leasing Commissions $ 0  
Maple Heights, OH One [Member]    
Real Estate Properties [Line Items]    
Square Footage (unaudited) | ft² 180,000  
Annualized GAAP Rent $ 530  
Tenant Improvement 60  
Leasing Commissions $ 0  
Indianapolis, IN [Member]    
Real Estate Properties [Line Items]    
Lease Commencement Date   Jan. 01, 2015
Square Footage (unaudited) | ft²   3,546
Annualized GAAP Rent   $ 64
Tenant Improvement   64
Leasing Commissions   $ 28
Lease term   8 years 3 months 18 days
Indianapolis, IN One [Member]    
Real Estate Properties [Line Items]    
Lease Commencement Date   Feb. 01, 2015
Square Footage (unaudited) | ft²   8,275
Annualized GAAP Rent   $ 124
Tenant Improvement   0
Leasing Commissions   $ 0
Lease term   3 years
Raleigh, NC [Member]    
Real Estate Properties [Line Items]    
Lease Commencement Date   Feb. 01, 2015
Square Footage (unaudited) | ft²   58,926
Annualized GAAP Rent   $ 711
Tenant Improvement   0
Leasing Commissions   $ 144
Lease term   5 years 6 months
Raleigh, NC One [Member]    
Real Estate Properties [Line Items]    
Lease Commencement Date   Feb. 01, 2015
Square Footage (unaudited) | ft²   21,300
Annualized GAAP Rent   $ 239
Tenant Improvement   100
Leasing Commissions   $ 32
Lease term   5 years 6 months
Columbus, OH [Member]    
Real Estate Properties [Line Items]    
Lease Commencement Date   Dec. 01, 2016
Square Footage (unaudited) | ft²   9,484
Annualized GAAP Rent   $ 1,246
Tenant Improvement   142
Leasing Commissions   $ 29
Lease term   7 years 1 month 6 days
Burnsville, MN [Member]    
Real Estate Properties [Line Items]    
Lease Commencement Date Dec. 01, 2016  
Square Footage (unaudited) | ft² 12,663  
Renewal Options | option 1  
Renewal options period 5 years  
Annualized GAAP Rent $ 143  
Tenant Improvement 0  
Leasing Commissions $ 104  
Lease term 5 years 3 months 18 days  
South Hadley, MA [Member]    
Real Estate Properties [Line Items]    
Square Footage (unaudited) | ft² 150,000  
Annualized GAAP Rent $ 288  
Tenant Improvement 0  
Leasing Commissions $ 7  
Raleigh NC Two [Member]    
Real Estate Properties [Line Items]    
Lease Commencement Date   Aug. 01, 2015
Square Footage (unaudited) | ft²   86,886
Renewal Options | option   2
Renewal options period   5 years
Annualized GAAP Rent   $ 534
Tenant Improvement   800
Leasing Commissions   $ 398
Lease term   12 years 4 months 24 days
Indianapolis, IN Two [Member]    
Real Estate Properties [Line Items]    
Lease Commencement Date   Aug. 01, 2015
Square Footage (unaudited) | ft²   6,903
Annualized GAAP Rent   $ 111
Tenant Improvement   64
Leasing Commissions   $ 16
Lease term   3 years
Baytown, TX [Member]    
Real Estate Properties [Line Items]    
Lease Commencement Date   Sep. 18, 2015
Square Footage (unaudited) | ft²   6,791
Renewal Options | option   2
Renewal options period   5 years
Annualized GAAP Rent   $ 132
Tenant Improvement   360
Leasing Commissions   $ 71
Lease term   7 years
Indianapolis, IN Three [Member]    
Real Estate Properties [Line Items]    
Lease Commencement Date   Oct. 01, 2015
Square Footage (unaudited) | ft²   1,427
Annualized GAAP Rent   $ 22
Tenant Improvement   0
Leasing Commissions   $ 4
Lease term   3 years
Bolingbrook, IL (2) [Member]    
Real Estate Properties [Line Items]    
Lease Commencement Date Jan. 02, 2017  
Square Footage (unaudited) | ft² 20,719  
Annualized GAAP Rent $ 107  
Tenant Improvement 204  
Leasing Commissions $ 48  
Salt Lake City UT [Member]    
Real Estate Properties [Line Items]    
Renewal Options | option   1
Renewal options period   5 years