The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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+ Details

Impairment of Real Estate (Details) (USD $) In Thousands	6 Months Ended						12 Months Ended
Impairment of Real Estate (Details) (USD $) In Thousands	Jun. 30, 2011	Jun. 30, 2011 Segment, Discontinued Operations [Member]	Jun. 30, 2010 Segment, Continuing Operations [Member]	Jun. 30, 2011 Subsidiary 55 Percent Owned [Member]	Jun. 30, 2011 Discontinued Operation or Asset Disposal [Member]	Jun. 30, 2010 Discontinued Operation or Asset Disposal [Member]	Dec. 31, 2010 Secured Bond Investment [Member]
Impairment of Real Estate
Impairment charges on real estate		$ 53,638	$ 2,955	$ 25,500	$ 35,131	$ 47,097
Impairment of real estate noncontrolling partner's share	11,478
Other than Temporary Impairment Losses, Investments							$ 168