Line of Credit and Debt Obligations (Details Textual) (USD $)	1 Months Ended		6 Months Ended			6 Months Ended	1 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jun. 30, 2012	Apr. 23, 2012	Dec. 31, 2011	Jun. 30, 2012 Minimum [Member]	Apr. 30, 2012 Revolving line of credit facility [Member]	Jul. 31, 2008 Residential Mortgage [Member]	Jun. 30, 2012 Residential Mortgage [Member]
Line of Credit and Debt Obligations (Textual) [Abstract]
Commitment fee minimum percentage further decreased				0.10%
Extension of maturity period on amendment of existing credit facility							2 years
Interest rate during period						5.75%
Borrowing interest rate						3.00%
Mortgage agreement, borrowed amount			$ 7,139,000		$ 7,452,000				$ 13,500,000
Interest rate description for mortgage								Initially bears interest at the rate of 7.18% per annum, which rate will be reset after five years to 3.03% over the then weekly average yield of five-year U.S. Dollar Interest Rate Swaps as published by the Federal Reserve
Mortgage bears interest rate initially									7.18%
Mortgage bears interest rate after five year									3.03%
Line of Credit and Debt Obligations (Additional Textual) [Abstract]
Commitment fee minimum percentage decreased				0.1875%
Maturity date				Apr. 30, 2014
Limited borrowing amount			7,500,000
Borrowing base			20,000,000
Amounts outstanding drawn on facility			0
Monthly principal and interest payments description			A twenty year amortization for the first sixty months and fifteen year amortization thereafter. The remaining principal balance of the mortgage and any accrued but unpaid interest will be due on August 1, 2018
Amortization period of mortgage loan for sixty month			20 years
Amortization period of mortgage loan after sixty month			15 years
Maximum percentage of outstanding debt for pre payment			20.00%
Debt instrument pre payment	1,400,000	1,950,000
Early Repayment Percent of Outstanding Debt	20.00%	20.00%
Estimated fair value of debt			$ 8,000,000		$ 8,300,000