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Non-Controlling Interests, Preferred Shares, Common Shares and Common Shares in Treasury - Non-Controlling Interests (Detail) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Noncontrolling Interest [Abstract]    
Consolidated joint venture interests $ 15,800,000 $ 16,900,000
Operating partnership units 7,400,000 7,400,000
Non-controlling interests, total $ 23,218,000 $ 24,322,000