Annual report pursuant to Section 13 and 15(d)

Mortgage Notes Payable and Line of Credit - Summary of Long-Term Mortgages (Detail)

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Mortgage Notes Payable and Line of Credit - Summary of Long-Term Mortgages (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Debt Instrument [Line Items]      
Debt Issued $ 68,499 $ 52,085 $ 79,995
Libor rate description One month LIBOR was approximately 0.43%    
Libor rate 0.43%    
Maturity Date One [Member] | PNC Bank, NA [Member]      
Debt Instrument [Line Items]      
Date of Issuance Mar. 06, 2015    
Issuing Bank PNC Bank, NA    
Debt Issued $ 14,573    
Interest Rate 3.86%    
Maturity Date Apr. 01, 2025    
Maturity Date Two [Member] | FC Bank [Member]      
Debt Instrument [Line Items]      
Date of Issuance May 28, 2015    
Issuing Bank FC Bank    
Debt Issued $ 4,466    
Interest Rate 3.75%    
Maturity Date Jun. 01, 2022    
Maturity Date Three [Member] | Guggenheim Partners [Member]      
Debt Instrument [Line Items]      
Date of Issuance Jun. 16, 2015    
Issuing Bank Guggenheim Partners    
Debt Issued $ 13,000    
Interest Rate 3.99%    
Maturity Date Jul. 01, 2045    
Maturity Date Four [Member] | Synovus Bank [Member]      
Debt Instrument [Line Items]      
Date of Issuance Jun. 29, 2015    
Issuing Bank Synovus Bank    
Debt Issued $ 19,780    
Libor rate description LIBOR + 2.25%    
Maturity Date Jul. 01, 2018    
Libor rate 2.25%    
Maturity Date Five [Member] | Synovus Bank [Member]      
Debt Instrument [Line Items]      
Date of Issuance Jul. 01, 2015    
Issuing Bank Synovus Bank    
Debt Issued $ 1,700    
Libor rate description LIBOR + 2.25%    
Maturity Date Jul. 01, 2018    
Libor rate 2.25%    
Maturity Date Six [Member] | Prudential Mortgage Capital Company [Member]      
Debt Instrument [Line Items]      
Date of Issuance Jul. 15, 2015    
Issuing Bank Prudential Mortgage Capital Company    
Debt Issued $ 7,540    
Interest Rate 4.53%    
Maturity Date Aug. 01, 2022    
Maturity Date Seven [Member] | Key Bank N.A [Member]      
Debt Instrument [Line Items]      
Date of Issuance Oct. 20, 2015    
Issuing Bank KeyBank NA    
Debt Issued $ 3,800    
Interest Rate 4.59%    
Maturity Date Nov. 01, 2025    
Maturity Date Eight [Member] | First Niagara Bank [Member]      
Debt Instrument [Line Items]      
Date of Issuance Nov. 10, 2015    
Issuing Bank First Niagara Bank    
Debt Issued $ 3,640    
Libor rate description LIBOR + 2.25%    
Maturity Date Dec. 01, 2020    
Libor rate 2.25%