v2.4.0.6
Share Redemption Program (Details Textual) (USD $)
1 Months Ended 3 Months Ended
Mar. 31, 2014
Feb. 28, 2014
Jan. 31, 2014
Mar. 31, 2014
Dec. 31, 2013
Maximum Percentage Of Shares Redeemable       5.00%  
Net Asset Value Per Share $ 14.53     $ 14.53 $ 14.66
Treasury Stock Acquired, Average Cost Per Share (in dollars per share) $ 14.76 $ 14.76 $ 14.76 $ 14.76  
Minimum [Member]
         
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)       $ 14.76  
Maximum [Member]
         
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)       $ 20