Risk Management and Use of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2014

Derivatives, Fair Value [Line Items]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

Hedge Product	Hedge Type	Designation		Notional Amount				Strike		Trade Date	Maturity Date	Fair value
				09/30/2014		12/31/2013						09/30/2014			12/31/2013
Assets:
Swap	Interest Rate	Cash Flow	(a)	$	25,774	$	25,774	3.300	%	December 22, 2011	January 30, 2021	$	68		$	549
Swap	Interest Rate	Cash Flow	(a)	25,774		25,774		3.090	%	January 6, 2012	October 30, 2019	23			218
				$	51,548	$	51,548					$	91		$	767
Liabilities:
Swap	Interest Rate	Cash Flow	(a)	$	200,000	$	200,000	3.623	%	December 6-13, 2011	February 1, 2019	$	(1,243	)	$	(545	)
Swap	Interest Rate	Cash Flow	(a)	27,062		27,062		2.750	%	December 21, 2011	September 30, 2017	(181		)	(311		)
Swap	Interest Rate	Cash Flow	(a), (b)	—		77,000		2.703	%	December 9-13, 2011	February 1, 2016	—			(887		)
Swap	Interest Rate	Cash Flow	(a), (b)	—		50,000		2.470	%	December 13, 2011	February 1, 2015	—			(283		)
Swap	Interest Rate	Cash Flow	(a), (b)	—		23,000		2.513	%	December 7-12, 2011	May 1, 2015	—			(162		)
				$	227,062	$	377,062					$	(1,424	)	$	(2,188	)

(a) Hedging unsecured variable rate debt.