Annual report pursuant to Section 13 and 15(d)

Real Estate and Intangible Assets - Components of Investments in Real Estate (Detail)

v3.6.0.2
Real Estate and Intangible Assets - Components of Investments in Real Estate (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Real estate:      
Land $ 104,719 $ 97,117  
Building and improvements 662,661 635,728  
Tenant improvements 54,369 47,532  
Accumulated depreciation (131,661) (112,243)  
Total real estate, net 690,088 668,134  
Building and Improvements [Member]      
Real Estate Properties [Line Items]      
Depreciation $ 24,100 $ 22,200 $ 18,800