SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended 14 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Feb. 28, 2012
Quarterly Financial Information Disclosure [Abstract]                        
Revenues $ 9,047 $ 9,136 $ 7,912 $ 6,730 $ 5,447 $ 4,825 $ 4,019 $ 1,814 $ 32,825 $ 16,105 $ 5,372  
Net loss $ (716) $ (1,526) $ (3,336) $ (2,167) $ (1,832) $ (2,448) $ (4,880) $ (1,073) $ (7,745) $ (10,233) $ (2,093)  
Net loss per common share, basic and diluted (in dollars per share) $ (0.04) $ (0.08) $ (0.18) $ (0.14) $ (0.16) $ (0.25) $ (0.61) $ (0.19) $ (0.44) $ (1.16) $ (1.21)  
Distributions declared per common share (usd per share) $ 0.164 [1] $ 0.164 [1] $ 0.162 [1] $ 0.160 [1] $ 0.164 [1] $ 0.164 [1] $ 0.162 [1] $ 0.160 [1] $ 0.650 $ 0.650 $ 0.650  
Distribution rate per share per day, declared (usd per share)                 $ 0.00178082 $ 0.00178082 $ 0.00178082 $ 0.00178082
[1] Distributions declared per common shares assumes each share was issued and outstanding each day during the respective quarterly period from January 1, 2012 through December 31, 2013. Each day during the period from January 1, 2012 through February 28, 2012 and March 1, 2012 through December 31, 2013 was a record date for distributions. Distributions were calculated at a rate of $0.00178082 per share per day.