Notes Receivable From Real Estate Joint Ventures And Partnerships (Details) (USD $)	1 Months Ended	3 Months Ended	12 Months Ended
Feb. 29, 2012	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Nov. 30, 2012
Notes Receivable From Real Estate Joint Ventures And Partnerships [Line Items]
Interest rate on notes receivable - range minimum		2.90%		2.90%
Interest rate on notes receivable - range maximum		10.00%		16.00%
Notes receivable due at various dates through		Jun. 30, 2014		Jun. 30, 2014
Allowance for uncollectible notes receivable		$ 0		$ 0
Interest income on notes receivable		600,000	700,000
Notes receivable from real estate joint ventures and partnerships, currently due					16,100,000
Proceeds received for notes receivable	$ 59,200,000	$ 3,937,000	$ 59,897,000
Ownership percentage in joint ventures	47.80%			75.00%

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Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

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Income derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time value of money or transactions in which the payments are for the use or forbearance of money.

+ References

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-Publisher FASB

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The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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- Definition

Notes Receivable Due Date

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No definition available.

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- Definition

When presenting a range of either fixed or variable rates of interest that are charged to borrowers on the carrying amount of loans, the highest stated (contractual) rate under the agreement as of the balance sheet date.

+ References

No definition available.

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When presenting a range of either fixed or variable rates of interest that are charged to borrowers on the carrying amount of loans, the lowest stated (contractual) rate under the agreement as of the balance sheet date.

+ References

No definition available.

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