Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Common shares, no par value (in USD per share)	$ 0	$ 0
Common shares, shares issued (in shares)	54,796,741	54,570,691
Common shares, shares outstanding (in shares)	54,796,741	54,570,691