Fair Value Measurements

12 Months Ended

Dec. 31, 2012

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

(a) Disclosure of Fair Value of Financial Instruments

All financial instruments of the Company are reflected in the accompanying Consolidated Balance Sheets at amounts which, in management's estimation, reasonably approximates their fair values, except those listed below. The following provides information about the methods and assumptions used to estimate the fair value of the Company's financial instruments, including their estimated fair values.

Notes Receivable

The fair value of the Company's notes receivable is estimated by calculating the present value of future contractual cash flows discounted at an interest rate available for notes of the same terms and maturities adjusted for customer specific credit risk. The interest rates range from 7.0% to 8.1% and 7.1% to 8.1% at December 31, 2012 and 2011, respectively, based on the Company's estimates. The fair value of notes receivable was determined primarily using Level 3 inputs of the fair value hierarchy. Based on the estimates made by the Company, the fair value of notes receivable was $23.7 million and $35.3 million at December 31, 2012 and 2011, respectively.

Notes Payable

The fair value of the Company's notes payable is estimated by discounting future cash flows of each instrument at rates that reflect the current market rates available to the Company for debt of the same terms and maturities. These rates range from 2.4% to 3.3% and 2.4% to 4.3% at December 31, 2012 and 2011, respectively, based on the Company's estimates. Fixed rate loans assumed in connection with real estate acquisitions are recorded in the accompanying consolidated financial statements at fair value at the time the property is acquired including those loans assumed in distribution-in-kind liquidations. The fair value of the notes payable was determined using Level 2 inputs of the fair value hierarchy. Based on the estimates used by the Company, the fair value of notes payable was $2.0 billion and $2.1 billion at December 31, 2012 and 2011, respectively.

Unsecured Credit Facilities

The fair value of the Company's unsecured credit facilities is estimated based on the interest rates currently offered to the Company by the Company's third partylenders, which is estimated to be 1.6% and 1.5% at December 31, 2012 and 2011, respectively. The fair value of the unsecured credit facilities was determined using Level 2 inputs of the fair value hierarchy. Based on the estimates used by the Company, the fair value of the unsecured credit facilities was $170.2 million and $40.0 million at December 31, 2012 and 2011, respectively.

(b) Fair Value Measurements

Internally developed fair value measurements, including the unobservable inputs, are evaluated for reasonableness based on current transactions and experience in the real estate and capital markets. Service providers involved in fair value measurements are evaluated for competency and qualifications on an ongoing basis. The Company's valuation policies and procedures are determined by its Finance Group, which reports to the Chief Financial Officer, and the results of significant fair value measurements are discussed with the Audit Committee of the Board of Directors on a quarterly basis. The following describe valuation methods for each of our financial instruments required to be measured at fair value on a recurring basis.

Trading Securities Held in Trust

The Company has investments in marketable securities that are classified as trading securities held in trust on the accompanying Consolidated Balance Sheets. The fair value of the trading securities held in trust was determined using quoted prices in active markets, considered Level 1 inputs of the fair value hierarchy. Changes in the value of trading securities are recorded within net investment (income) loss from deferred compensation plan in the accompanying Consolidated Statements of Operations.

Derivative Financial Instruments

The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty's nonperformance risk in the fair value measurements.

Although the Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads, to evaluate the likelihood of default by the Company and its counterparties. Changes in these credit valuation adjustments are not expected to result in a significant change in the valuation of the Company's derivatives.

The following are fair value measurements recorded on a recurring basis at December 31, 2012 and 2011, respectively (in thousands):

		Fair Value Measurements at December 31, 2012
				Quoted Prices in Active Markets for Identical Assets	Significant Other Observable Inputs		Significant Unobservable Inputs
Assets		Balance		(Level 1)	(Level 2)		(Level 3)
Trading securities held in trust	$	23,429		23,429	—		—
Interest rate derivatives		4,307		—	4,412		(105	)
Total	$	27,736		23,429	4,412		(105	)
Liabilities:
Interest rate derivatives	$	(76	)	—	(77	)	1

		Fair Value Measurements at December 31, 2011
				Quoted Prices in Active Markets for Identical Assets	Significant Other Observable Inputs		Significant Unobservable Inputs
Assets		Balance		(Level 1)	(Level 2)		(Level 3)
Trading securities held in trust	$	21,713		21,713	—		—
Liabilities:
Interest rate derivatives	$	(37	)	—	(38	)	1

The following are fair value measurements recorded on a nonrecurring basis at December 31, 2012 and 2011, respectively (in thousands):

		Fair Value Measurements at December 31, 2012
			Quoted Prices in Active Markets for Identical Assets	Significant Other Observable Inputs	Significant Unobservable Inputs	Total Losses(1)
Assets		Balance	(Level 1)	(Level 2)	(Level 3)
Long-lived assets held and used
Operating and development properties	$	49,673	—	—	49,673	(54,500	)
(1) Excludes impairments for properties sold during the year ended December 31, 2012.

		Fair Value Measurements at December 31, 2011
			Quoted Prices in Active Markets for Identical Assets	Significant Other Observable Inputs	Significant Unobservable Inputs	Total Losses(1)
Assets		Balance	(Level 1)	(Level 2)	(Level 3)
Long-lived assets held and used
Operating and development properties	$	5,520	—	—	5,520	(11,843	)
Investment in real estate partnerships		1,893	—	—	1,893	(4,580	)
Total	$	7,413	—	—	7,413	(16,423	)
(1) Excludes impairments for properties sold during the year ended December 31, 2011.

Long-lived assets held and used are comprised primarily of real estate. The Company recognized a $54.5 million impairment loss related to two operating properties during the year ended December 31, 2012. The Company has determined that it is more likely than not that one of the properties will be sold before the end of its previously estimated useful life, and the other property was exhibiting weak operating fundamentals including low economic occupancy for an extended period of time, which led to the impairments. As a result, the Company estimated the fair value of the properties and recorded the impairment losses. As discussed in Note 1, the Company considers a property to be held-for-sale when the property is under contract, significant non-refundable deposits have been made by the potential buyer, the assets are immediately available for transfer, and there are no contingencies related to the sale that may prevent the transaction from closing. Given the nature of all real estate sales contracts, these conditions or criteria are typically not satisfied until the actual closing of the transaction. However, each potential transaction is evaluated based on its separate facts and circumstances. The Company evaluated these properties and determined that they did not meet the criteria for held-for-sale as of December 31, 2012.

In addition, the Company recognized a $16.4 million impairment loss related to one operating property and the Company's investment in a real estate partnership during the year ended December 31, 2011. This operating property exhibited weak operating fundamentals, including low economic occupancy for an extended period of time, which lead to the impairment. As a result, the Company estimated the fair value of the properties and recorded an impairment loss.

Fair value for those assets measured using Level 3 inputs was determined through the use of an income approach. The income approach estimates an income stream for a property (typically 10 years) and discounts this income plus a reversion (presumed sale) into a present value at a risk adjusted rate. Overall cap rates and growth assumptions utilized in this approach are derived from market transactions as well as other financial and industry data. The terminal cap rate and discount rate are significant inputs to this valuation. The following are ranges of key inputs used in determining the fair value of real estate measured using Level 3 inputs as of December 31, 2012 and 2011:

	2012		2011
	Low	High	Low	High
Overall cap rates	8.3%	8.5%	7.5%	9.0%
Rental growth rates	(8.3)%	2.5%	2.0%	3.0%
Discount rates	10.5%	10.5%	8.5%	10.0%
Terminal cap rates	8.8%	8.8%	8.0%	9.5%

Changes in these inputs could result in a significant change in the valuation of the real estate and a change in the impairment loss recognized during the period.