Merger Agreement - Additional Information (Detail) (USD $)	1 Months Ended	9 Months Ended
	Jul. 08, 2013	Sep. 30, 2013
Business Combination Transactions [Line Items]
Special cash dividend received	$ 5.50
CIM Urban REIT [Member]
Business Combination Transactions [Line Items]
Newly issued common shares	22,000,000
Newly issued preferred shares	65,000,000
Total common shares to be issued pursuant to merger	477,200,000
Percentage of shares outstanding	97.80%
Number of preferred shares converted to common stock shares	7
Reimbursable legal and due diligence costs in relation to merger		$ 542,000