Equity (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Class of Stock [Line Items]
Common shares at beginning of period	64,742	64,502
Issuance of common shares	112	0
Forfeiture of restricted shares	(134)	(15)
Common shares at end of period	64,720	64,487