The aggregate value (measured at the lower of net carrying value or fair value less cost of disposal) for assets of a disposal group, including a component of the entity (discontinued operation), to be sold or that has been disposed of through sale, as of the financial statement date.

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-Paragraph 46
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Gain (loss) after tax expense or benefit, not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds (is exceeded by) the net carrying amount (reflecting previous provisions for loss on disposal, if any) of the disposal group.

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Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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This element represents the overall income (loss) from a disposal group that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items before deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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- Definition

Liability (such as a mortgage) related to a disposal group that is held for sale and anticipated to be sold in less than one year. The liability is expected to be discharged as part of the plan of sale for the asset.

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Cash received for the sale of real estate that is not part of an investing activity during the current period.

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- Definition

This element represents the difference between the fair value of the payments made and the carrying amount of the debt at the time of extinguishment for properties that were sold or for discontinued operations

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This element represents impairment losses relating to properties sold or held for sale.

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Disposal Group Including Discontinued Operation Total Expenses

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This element represents the operating income from the properties that were sold or the income from discontinued operations before gains on sale of real estate

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Discontinued Operations (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
Discontinued Operations (Details) (USD $) In Thousands	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract]
Total revenues	$ 0	$ 12,116	$ 5,987	$ 23,137
Total expenses	0	15,797	6,744	26,332
Operating Income from Discontinued Operations	0	(3,681)	(757)	(3,195)
Net gain on extinguishment of debt	0	0
Disposal Group Including Discontinued Operation Litigation Loss Accruals Impairments			0	(10,056)
Income (loss) from discontinued operations	458	(3,681)	134,773	(13,251)
Disposal Group Including Discontinued Operation Unclassified Balance Sheet Disclosures Abstract
Assets related to discontinued operations	0		0		234,464
Liabilities related to discontinued operations	0		0		255,922
Other real estate [Member]
Disposal Group Including Discontinued Operation Additional Disclosures Abstract
Cash Sale of Real Estate			40,990
Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract]
Net gains on sale of real estate	458		5,761
Washington DC1140 Connecticut Avenue [Member]
Disposal Group Including Discontinued Operation Unclassified Balance Sheet Disclosures Abstract
Assets related to discontinued operations	0		0		36,271
Liabilities related to discontinued operations	0		0		18,948
Washington DC1227 Twenty Fifth Street [Member]
Disposal Group Including Discontinued Operation Unclassified Balance Sheet Disclosures Abstract
Assets related to discontinued operations	0		0		43,630
Liabilities related to discontinued operations	0		0		0
High Point Complex [Member]
Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract]
Net gain on extinguishment of debt			83,907	0
Disposal Group Including Discontinued Operation Unclassified Balance Sheet Disclosures Abstract
Assets related to discontinued operations	0		0		154,563
Liabilities related to discontinued operations	0		0		236,974
Washington DC 1140 Connecticut Avenue and 1227 Twenty Fifth Street [Member]
Disposal Group Including Discontinued Operation Additional Disclosures Abstract
Cash Sale of Real Estate			127,000
Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract]
Net gains on sale of real estate			$ 45,862