Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Derivative Financial Instruments (Details)

v2.4.0.8
Summary of Significant Accounting Policies - Derivative Financial Instruments (Details) (Interest Rate Swap, USD $)
 12 Months Ended 1 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2007
contract
Dec. 31, 2007
Interest Rate Swap Contract 1
Dec. 31, 2007
Interest Rate Swap Contract 2
Mar. 31, 2010
Interest Rate Swap Contract 3
swap
Jul. 31, 2011
Interest Rate Swap Contract 4
swap
Oct. 31, 2012
Interest Rate Swap Contract 5
swap
Sep. 30, 2013
Interest Rate Swap Contract 5
Oct. 31, 2012
Interest Rate Swap Contract 6
swap
Dec. 31, 2013
Not Designated as Hedging Instrument
Dec. 31, 2012
Not Designated as Hedging Instrument
Dec. 31, 2011
Not Designated as Hedging Instrument
Derivative [Line Items]                      
Number of instruments 2     1 1 2   2      
Interest rate swaps, variable to fixed interest rates   5.40% 5.30% 6.99% 1.965% 1.71%   3.70%      
Amount of Gain (Loss) Recognized in Income on Derivative                 $ (266,414) $ 98,026 $ 1,313,587
Future Increase in Notional Amount             42,247,327        
Term of interest rate swap contract 15 years     14 years 5 years 8 years   8 years      
Notional amount   $ 13,080,607 $ 3,256,395 $ 27,900,000 $ 38,571,429 $ 16,750,000   $ 25,377,063