Organization of the Company and Basis of Presentation - Additional Information (Detail)				12 Months Ended			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Cumulative Series E Eighteen Point Seventy Five Percent Non-Voting Preferred Stock [Member]	Dec. 30, 2013 Cumulative Series E Eighteen Point Seventy Five Percent Non-Voting Preferred Stock [Member]	Dec. 31, 2012 Cumulative Series E Eighteen Point Seventy Five Percent Non-Voting Preferred Stock [Member]	Dec. 31, 2013 Cumulative Series D Six Percent Non-Qualified Preferred Stock [Member]	Dec. 30, 2013 Cumulative Series D Six Percent Non-Qualified Preferred Stock [Member]	Dec. 31, 2012 Cumulative Series D Six Percent Non-Qualified Preferred Stock [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Preferred Stock, Shares Authorized	9,945,164	9,945,539		250	250	0	125	125	0
Preferred Stock, Dividend Rate, Percentage				18.75%			6.00%
Non-Controlling Interests - Common OP Units	7,667,723	7,456,320	8,206,134