Fair Value of Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measure at Fair Value

The table below presents certain of our assets and liabilities measured at fair value during 2014 and 2013, categorized by the level of inputs used in the valuation of each asset and liability:

				Fair Value at December 31, 2014 Using
Description	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Recurring Fair Value Measurements:
Effective portion of interest rate contracts	$	(7,462	)	$	—	$	(7,462	)	$	—
Derivative liability	$	(6,658	)	$	—	$	—		$	(6,658	)

				Fair Value at December 31, 2013 Using
Description	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Recurring Fair Value Measurements:
Effective portion of interest rate contracts	$	(11,706	)	$	—	$	(11,706	)	$	—

Schedule of Valuation Techniques and Significant Unobservable Inputs Used for Level 3 Fair Value Measurements

The valuation techniques and significant unobservable inputs used for our level 3 fair value measurements at December 31, 2014 were as follows:

Description	Fair Value at December 31, 2014		Primary Valuation Techniques	Unobservable Inputs	Weighted Average(1)
Properties held and used on which we recognized impairment losses	$	414,625	Discounted cash flows	Discount rate	10.2%
				Exit capitalization rate	9.1%

The valuation techniques and significant unobservable inputs used for our level 3 fair value measurement at December 31, 2014 were as follows:

Description	Fair Value at December 31, 2014			Primary Valuation  Techniques	Unobservable Inputs	Rate
Derivative liability	$	(6,658	)	Monte Carlo	Risk-free rate	0.50%
				simulation	Volatility	20.0%

The valuation techniques and significant unobservable inputs used for our level 3 fair value measurements at December 31, 2013 were as follows:

Description	Fair Value at December 31, 2013		Primary Valuation Techniques	Unobservable Inputs	Weighted Average
Properties held for sale on which we recognized impairment losses	$	471,457	Discounted cash flows	Discount rate	10.3%
				Exit capitalization rate	8.8%

The valuation techniques and significant unobservable inputs used for our level 3 fair value measurements at June 30, 2014 were as follows:

Description	Fair Value at June 30, 2014		Primary Valuation Techniques	Unobservable Inputs	Rate
225 Water Street	$	19,589	Discounted cash flows	Discount rate	8%
				Exit capitalization rate	8%

Schedule of Fair Value and Carrying Value of Financial Instruments

At December 31, 2014 and 2013, the fair values of these additional financial instruments, excluding mortgage debt related to properties held for sale, were not materially different from their carrying values, except as follows (in thousands):

	December 31, 2014				December 31, 2013
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Revolving credit facility, senior unsecured debt and mortgage notes payable, net	$	2,207,665	$	2,263,535	$	3,005,410	$	3,037,649