Annual report pursuant to Section 13 and 15(d)

Real Estate and Intangible Assets - Carrying Value of Intangible Assets and Accumulated Amortization (Detail)

v3.8.0.1
Real Estate and Intangible Assets - Carrying Value of Intangible Assets and Accumulated Amortization (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]      
Below market leases, gross $ (26,725) $ (21,606)  
Below market leases, accumulated amortization 10,475 8,959  
Amortization of intangible assets 15,900 13,400 $ 13,100
Amortization of below market lease 1,500 1,200 900
Lease Intangibles [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived intangible assets, gross 194,942 169,734  
Finite-lived intangible assets, accumulated amortization (76,015) (64,181)  
In-Place Leases      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived intangible assets, gross 80,355 71,482  
Finite-lived intangible assets, accumulated amortization (33,201) (28,182)  
Leasing Costs      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived intangible assets, gross 55,695 48,000  
Finite-lived intangible assets, accumulated amortization (23,016) (18,599)  
Customer Relationships      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived intangible assets, gross 58,892 50,252  
Finite-lived intangible assets, accumulated amortization (19,798) (17,400)  
Above and Below Market Leases [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived intangible liabilities, gross (12,300) (11,127)  
Finite-lived intangible liabilities, accumulated amortization 2,513 1,663  
Above Market Leases      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived intangible assets, gross 14,425 10,479  
Finite-lived intangible assets, accumulated amortization (7,962) (7,296)  
Amortization of leased asset $ 700 $ 500 $ 400