Quarterly report pursuant to Section 13 or 15(d)

Real Estate and Intangible Assets - Additional Information (Detail)

v3.4.0.3
Real Estate and Intangible Assets - Additional Information (Detail)
$ in Millions
3 Months Ended
Mar. 31, 2016
USD ($)
Property
Acquisition
Mar. 31, 2015
USD ($)
Lease
Property
Real Estate Properties [Line Items]    
Number of acquisitions completed | Acquisition 0  
Number of leased properties | Property 1  
Number of leases amended | Lease   4
Total amortization expense related to lease intangible assets $ 3.3 $ 3.0
Amortization related to below-market lease 0.2 0.2
Building and Tenant Improvements [Member]    
Real Estate Properties [Line Items]    
Real estate depreciation expense 5.9 5.2
Above Market Leases [Member]    
Real Estate Properties [Line Items]    
Amortization related to above-market lease $ 0.1 $ 0.1
2015 Real Estate Activity [Member]    
Real Estate Properties [Line Items]    
Number of properties acquired | Property   2