For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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+ Details

- Definition

Carrying amount as of the balance sheet date of obligations due all related parties.

+ References

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+ Details

Related Parties - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Related Party Transaction [Line Items]
Due from related parties	$ 100,000		$ 0
Tenant Reimbursements	413,243	400,000
Merchant Banking Funds
Related Party Transaction [Line Items]
Due to affiliates	$ 0		$ 0
Minimum
Related Party Transaction [Line Items]
Sublease agreement	P3Y
Maximum
Related Party Transaction [Line Items]
Sublease agreement	P5Y
Sublease \| Minimum
Related Party Transaction [Line Items]
Office space lease period	3 years
Sublease \| Maximum
Related Party Transaction [Line Items]
Office space lease period	5 years