Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.8
Real Estate and Intangible Assets - Value of Intangible Assets and Accumulated Amortization (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]    
Lease Intangibles $ 108,099 $ 84,827
Accumulated Amortization (32,754) (27,573)
In-place Leases [Member]
   
Finite-Lived Intangible Assets [Line Items]    
Lease Intangibles 44,743 34,085
Accumulated Amortization (14,237) (12,125)
Leasing Costs [Member]
   
Finite-Lived Intangible Assets [Line Items]    
Lease Intangibles 29,692 24,071
Accumulated Amortization (8,694) (7,103)
Customer Relationships [Member]
   
Finite-Lived Intangible Assets [Line Items]    
Lease Intangibles 33,664 26,671
Accumulated Amortization $ (9,823) $ (8,345)