Loans Receivable (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Activity related to loans receivable
Balance at beginning of year	$ 114,333	$ 110,395
Purchase and advances	163,800	67,619	122,301
Interest accrued (received), net	516	(37)
Repayments	(68,824)	(70,289)	(15,064)
Loan accretion	8,333	13,401	8,782
Discount accretion received in cash	(15,720)	(13,290)
Conversion of 180 North Michigan loan to equity investments	(2,938)	(4,650)
Transfer from loan securities		662
Transfer Marc realty seller financing from equity investments		12,544
Transfer Sealy loan to equity investments		4,650
Transfer 450W 14th St bridge loan to preferred equity investments		(2,022)
Balance at end of year	$ 211,250	$ 114,333	$ 110,395

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Loans receivable amount of interest received accrued.

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Mortgage loans receivable transfer from equity investments.

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No definition available.

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Mortgage loans receivable transfers to equity investments.

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Mortgage loans receivable transfers to preferred equity investments.

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Mortgage loans receivable transfer to equity investments.

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Transfer from loan securities.

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No definition available.

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The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The increase in the net discounted value of the proved oil and gas reserves due only to the passage of time.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

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-Subparagraph c

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The cash outflow for the purchase of loan receivable arising from the financing of goods and services.

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-Glossary Investing Activities

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The cash inflow associated with the collection, including prepayments, of loans receivable issued for financing of goods and services.

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