Debt (Details Textual) (USD $)			6 Months Ended				6 Months Ended		6 Months Ended	12 Months Ended							1 Months Ended						1 Months Ended		6 Months Ended						6 Months Ended		6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Mortgage Loans [Member]	Jun. 30, 2012 AT&T Property [Member]	Jan. 31, 2012 AT&T Property [Member]	Mar. 22, 2012 Westinghouse Property [Member]	Jun. 30, 2012 GE [Member]	Jun. 29, 2012 Travelers Property [Member]	Jun. 30, 2012 Credit Facility [Member]	Dec. 31, 2011 Credit Facility [Member]	Nov. 18, 2011 Credit Facility [Member]	Jun. 30, 2012 Credit Facility [Member] Maximum [Member]	Jun. 30, 2012 Credit Facility [Member] Minimum [Member]	Dec. 31, 2011 Credit Facility [Member] AT&T Property [Member]	Jun. 30, 2012 Credit Facility [Member] Eurocurrency Fund [Member]	Jun. 30, 2012 Credit Facility [Member] Federal Fund [Member]	Jan. 31, 2012 Credit Facility [Member] Restated Keybank Credit Agreement [Member]	Jun. 29, 2012 Credit Facility [Member] Restated Keybank Credit Agreement [Member]	Mar. 22, 2012 Credit Facility [Member] Restated Keybank Credit Agreement [Member]	Mar. 16, 2012 Credit Facility [Member] Restated Keybank Credit Agreement [Member]	Feb. 08, 2012 Credit Facility [Member] Restated Keybank Credit Agreement [Member]	Dec. 31, 2011 Credit Facility [Member] Restated Keybank Credit Agreement [Member]	Jul. 31, 2012 Mezzanine Loan [Member]	Jan. 31, 2012 Mezzanine Loan [Member]	Jun. 30, 2012 Mezzanine Loan [Member]	May 31, 2012 Mezzanine Loan [Member]	Mar. 21, 2012 Mezzanine Loan [Member]	Dec. 31, 2010 Mezzanine Loan [Member]	Mar. 22, 2012 Mezzanine Loan [Member] Westinghouse Property [Member]	May 31, 2012 Mezzanine Loan [Member] GE [Member]	Jun. 30, 2012 Bridge Loan [Member]	Jun. 29, 2012 Bridge Loan [Member]	Jun. 30, 2012 LTI [Member]
Debt (Textual) [Abstract]
GE property, Agreement			May 31, 2012
Interest from property, term			10 years
GE mortgage debt bears a fixed interest rate			5.98%
Credit Facility draw	$ 95,880,000	$ 35,395,985							$ 95,900,000		$ 70,000,000									$ 115,000,000
Credit facility committed from each lender											35,000,000
Revised credit facility term									2 years
Line of credit facility expiration date									Nov. 18, 2013
Line of credit facility maximum borrowing capacity	115,000,000								150,000,000											35,000,000		10,000,000
Line of credit facility additional amount for financing cost									400,000
Adjusted base rate									1.00%
Applicable variable rate									1.75%
LIBO Rate								6.75%							2.75%	0.50%									0.25%			6.50%			0.25%	6.50%
LIBOR base rate																									LIBO Rate + 6.50%.						LIBO Rate + 6.50%.
Increased credit agreement																	80,000,000
Acquisition of property					22,000,000	27,100,000		9,700,000						22,000,000				9,700,000	27,100,000										9,000,000	6,000,000
Remaining borrowing capacity available																					1,700,000
Line of credit facility current Availability									95,900,000
Total commitments of Mezzanine Credit Agreement																												15,000,000
Cost of acquisition																								12,400,000
Term of loan																									6 months						4 months
Bridge Loan obtained with Key Bank																																6,200,000
Debt, Weighted Average Interest Rate	6.09%																											6.77%
Minimum periodic payment of loan																							4,000,000
Balance of loan																											3,400,000		8,500,000
Payments made on loan																											9,000,000
Draw to pay fees owed to the Company's Advisor																										2,500,000
Liquidity requirements									3,000,000	2,000,000
Leverage ratio									0.65
Interest coverage ratio												1.85	1
Fixed charge ratio												1.60	1
Variable debt ratio									30.00%
Minimum tangible net worth									50,000,000
Percentage of minimum tangible net worth									80.00%
Percentage of equity in any properties									100.00%
Maturity Date			June 1,2016	December 31, 2012			2016		November 18, 2014																July 31, 2012						October 31, 2012		2016
Cost of the interest rate cap agreement				10,000
Interest rate cap agreement				60,000,000
Principal repayments							500,000																										500,000
Monthly Minimum Amount																									4,000,000						5,000,000
Monthly Minimum Amount Thereafter																									$ 5,000,000