Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
BASIC
Income (loss) from continuing operations attributable to common shareholders - basic	$ 16,901	$ (8,477)	$ 17,237	$ (19,701)
Income (loss) from continuing operations attributable to common shareholders	(4,159)	7,628	(5,333)	11,557
Net income (loss) attributable to common shareholders	12,742	(849)	11,904	(8,144)
Weighted-average common shares outstanding - basic	228,368,053	211,619,288	227,765,718	200,487,623
Income (loss) from continuing operations	$ 0.07	$ (0.04)	$ 0.07	$ (0.10)
Income (loss) from discontinued operations	$ (0.02)	$ 0.04	$ (0.02)	$ 0.06
Net income (loss) attributable to common shareholders	$ 0.05	$ 0.00	$ 0.05	$ (0.04)
DILUTED
Income (loss) from continuing operations attributable to common shareholders - basic	16,901	(8,477)	17,237	(19,701)
Impact of assumed conversions:
Share options	0	0	0	0
Income (loss) from continuing operations attributable to common shareholders	16,901	(8,477)	17,237	(19,701)
Income (loss) from continuing operations attributable to common shareholders	(4,159)	7,628	(5,333)	11,557
Share options	0	0	0	0
Income (loss) from discontinued operations attributable to common shareholders	(4,159)	7,628	(5,333)	11,557
Net income (loss) attributable to common shareholders	$ 12,742	$ (849)	$ 11,904	$ (8,144)
Effect of dilutive securities:
Share options	483,131	0	509,890	0
Weighted-average common shares outstanding	228,851,184	211,619,288	228,275,608	200,487,623
Income (loss) per common share:
Income (loss) from continuing operations	$ 0.07	$ (0.04)	$ 0.07	$ (0.10)
Income (loss) from discontinued operations	$ (0.02)	$ 0.04	$ (0.02)	$ 0.06
Net income (loss) attributable to common shareholders	$ 0.05	$ 0.00	$ 0.05	$ (0.04)