Consolidated Balance Sheets (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Consolidated Balance Sheets [Abstract]
Common shares, no par value
Common Stock, Shares Authorized, Unlimited	Unlimited	Unlimited
Common shares, issued shares	106,822,001	107,200,470
Common shares, outstanding shares	106,822,001	107,200,470