CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED BALANCE SHEETS
Common shares, par value (in dollars per share)	$ 0.001	$ 0.001
Common shares, shares authorized	800,000,000	800,000,000
Common shares, shares issued	323,710,583	318,813,500
Treasury shares, at cost	28,414,000	28,414,000