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Fair Value Measurements | 6 Months Ended
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Jun. 30, 2012
Fair Value Disclosures [Abstract] |
Fair Value Disclosures [Text Block] | Fair Value Measurements For a description on how we estimate fair value, see Note 3 to the consolidated financial statements in our 2011 Annual Report on Form 10-K. Recurring Fair Value Measurements The table below sets forth our financial assets and liabilities that are accounted for at fair value on a recurring basis as of June 30, 2012 and the hierarchy level of inputs used in measuring their respective fair values under applicable accounting standards (in thousands):
Description |  | Quoted Prices in Active Markets for Identical Assets(Level 1) |  | Significant Other Observable Inputs(Level 2) |  | Significant Unobservable Inputs(Level 3) |  | Total
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Marketable securities in deferred compensation plan (1) |  |  |  |  |  |  |  |  |  |  |  |
Mutual funds |  | $ | 5,911 |  |  | $ | — |  |  | $ | — |  |  | $ | 5,911 |
Common stocks |  | 470 |  |  | — |  |  | — |  |  | 470 |
Other |  | 241 |  |  | — |  |  | — |  |  | 241 |
Common stock (1) |  | 446 |  |  | — |  |  | — |  |  | 446 |
Warrants to purchase common shares in KEYW (2) |  | — |  |  | 207 |  |  | — |  |  | 207 |
Assets |  | $ | 7,068 |  |  | $ | 207 |  |  | $ | — |  |  | $ | 7,275 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Deferred compensation plan liability (3) |  | $ | 6,622 |  |  | $ | — |  |  | $ | — |  |  | $ | 6,622 |
Interest rate derivatives |  | — |  |  | 4,400 |  |  | — |  |  | 4,400 |
Liabilities |  | $ | 6,622 |  |  | $ | 4,400 |  |  | $ | — |  |  | $ | 11,022 |
(1) Included in the line entitled “restricted cash and marketable securities” on our consolidated balance sheet. (2) Included in the line entitled “prepaid expenses and other assets” on our consolidated balance sheet. (3) Included in the line entitled “other liabilities” on our consolidated balance sheet. At December 31, 2011, we owned 1.9 million shares, or approximately 7%, of the common stock of The KEYW Holding Corporation (“KEYW”). During the six months ended June 30, 2012, we completed the sale of all of these shares for $14.0 million. At June 30, 2012 and December 31, 2011, we owned warrants to purchase 50,000 shares of KEYW common stock at an exercise price of $9.25 per share. The carrying values of cash and cash equivalents, restricted cash, accounts receivable, other assets (excluding mortgage loans receivable) and accounts payable and accrued expenses are reasonable estimates of their fair values because of the short maturities of these instruments. We estimated the fair values of our mortgage loans receivable as discussed in Note 6 based on the discounted estimated future cash flows of the loans (categorized within Level 3 of the fair value hierarchy); the discount rates used approximate current market rates for loans with similar maturities and credit quality, and the estimated cash payments include scheduled principal and interest payments. For our disclosure of debt fair values in Note 7 to the consolidated financial statements, we estimated the fair value of our exchangeable senior notes based on quoted market prices for publicly-traded debt (categorized within Level 2 of the fair value hierarchy) and estimated the fair value of our other debt based on the discounted estimated future cash payments to be made on such debt (categorized within Level 3 of the fair value hierarchy); the discount rates used approximate current market rates for loans, or groups of loans, with similar maturities and credit quality, and the estimated future payments include scheduled principal and interest payments. Fair value estimates are made at a specific point in time, are subjective in nature and involve uncertainties and matters of significant judgment. Settlement of such fair value amounts may not be possible and may not be a prudent management decision. For additional fair value information, please refer to Note 6 for mortgage loans receivable, Note 7 for debt and Note 8 for interest rate derivatives. Nonrecurring Fair Value Measurements We assess each of our operating properties for impairment quarterly using cash flow projections and estimated fair values that we derive for each of the properties. We update the leasing and other assumptions used in these projections regularly, paying particular attention to properties that have experienced chronic vacancy or face significant market challenges. We review our plans and intentions for our development projects and land parcels quarterly. Each quarter, we also review the reasonableness of changes in our estimated operating property fair values from amounts estimated in the prior quarter. If events or changes in circumstances indicate that the carrying values of certain operating properties, properties in development or land held for future development may be impaired, we perform a recovery analysis for such properties. For long-lived assets to be held and used, we analyze recoverability based on the estimated undiscounted future cash flows expected to be generated from the operations and eventual disposition of the assets over, in most cases, a ten-year holding period. If we believe there is a significant possibility that we might dispose of the assets earlier, we analyze recoverability using a probability weighted analysis of the estimated undiscounted future cash flows expected to be generated from the operations and eventual disposition of the assets over the various possible holding periods. If the recovery analysis indicates that the carrying value of a tested property is not recoverable from estimated future cash flows, it is written down to its estimated fair value and an impairment loss is recognized. If and when our plans change, we revise our recoverability analyses to use the cash flows expected from the operations and eventual disposition of each asset using holding periods that are consistent with our revised plans. Changes in holding periods may require us to recognize significant impairment losses. Property fair values are determined based on contract prices, indicative bids, discounted cash flow analyses or yield analyses. The estimated cash flows used are based on our plans for the property and our views of market and economic conditions. The estimates consider items such as current and future rental rates, occupancies for the tested property and comparable properties, estimated operating and capital expenditures and recent sales data for comparable properties; most of these items are influenced by market data obtained from third party sources such as CoStar Group and real estate leasing and brokerage firms and our direct experience with the properties and their markets. We recognized impairment losses on certain properties and other assets associated with such properties during the three and six months ended June 30, 2012. Accordingly, certain properties and related assets were adjusted to fair value. The table below sets forth the fair value hierarchy of the valuation techniques used by us in determining such fair values (dollars in thousands):
|  |  |  |  |  |  |  |  |  | Impairment Losses
|  | Quoted Prices in |  |  |  | Significant |  |  |  | Recognized
|  | Active Markets for |  | Significant Other |  | Unobservable |  |  |  | Three Months |  | Six Months
|  | Identical Assets |  | Observable Inputs |  | Inputs |  |  |  | Ended |  | Ended
Description |  | (Level 1) |  | (Level 2) |  | (Level 3) |  | Total |  | June 30, 2012 |  | June 30, 2012
Assets (1): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Properties, net |  | $ | — |  |  | $ | — |  |  | $ | 202,250 |  |  | $ | 202,250 |  |  | $ | 2,214 |  |  | $ | 7,693 |
(1) Reflects balance sheet classifications of assets at time of fair value measurement, excluding the effect of held for sale classifications. The table below sets forth quantitative information about significant unobservable inputs used for the Level 3 fair value measurements reported above (dollars in thousands):
Description |  | Fair Value on Measurement Date |  | Valuation Technique |  | Unobservable Input |  | Range
Properties on which impairment losses were recognized |  | $ | 202,250 |  |  | Bid for properties indicative of value |  | Indicative bid (1) |  | (1)
|  |  |  | Contract of sale |  | Contract price (1) |  | (1)
|  |  |  | Discounted cash flow |  | Discount rate |  | 11.0% (2)
|  |  |  |  |  | Terminal capitalization rate |  | 9.0% (2)
|  |  |  |  |  | Market rent growth rate |  | 3.0% (2)
|  |  |  |  |  | Expense growth rate |  | 3.0% (2)
|  |  |  | Yield Analysis |  | Yield |  | 12% (2)
|  |  |  |  |  | Market rent rate |  | $8.50 per square foot (2)
|  |  |  |  |  | Leasing costs |  | $20.00 per square foot (2)
(1) These fair value measurements were developed from third party sources, subject to our corroboration for reasonableness. (2) Only one value applied to this unobservable input.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19296-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 159 -Paragraph 17-22, 27, 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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