Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2016	Dec. 31, 2015
Preferred shares, par value (in USD per share)	$ 0.01	$ 0.01
Preferred shares, shares authorized	100,000,000	100,000,000
Preferred shares, shares issued	37,010,000	17,060,000
Preferred shares, shares outstanding	37,010,000	17,060,000
Class A common shares
Common shares, par value (in USD per share)	$ 0.01	$ 0.01
Common shares, shares authorized	450,000,000	450,000,000
Common shares, shares issued	237,730,284	207,235,510
Common shares, shares outstanding	237,730,284	207,235,510
Class B common shares
Common shares, par value (in USD per share)	$ 0.01	$ 0.01
Common shares, shares authorized	50,000,000	50,000,000
Common shares, shares issued	635,075	635,075
Common shares, shares outstanding	635,075	635,075