CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Storage facilities, net	$ 2,356,670	$ 2,155,170
Series A Preferred shares, percentage	7.75%	7.75%
Series A Preferred shares, par value (in dollars per share)	$ 0.01	$ 0.01
Series A Preferred shares, shares authorized	3,220,000	3,220,000
Series A Preferred shares, shares issued	3,100,000	3,100,000
Series A Preferred shares, shares outstanding	3,100,000	3,100,000
Common shares, par value (in dollars per share)	$ 0.01	$ 0.01
Common shares, shares authorized	200,000,000	200,000,000
Common shares, shares issued	153,233,858	139,328,366
Common shares, shares outstanding	153,233,858	139,328,366
VIE
Storage facilities, net	$ 40,726	$ 34,559