STOCK PLANS (Details) (USD $)	6 Months Ended
	Jun. 30, 2012
Common Shares, Balance, beginning of period	257,080
Common Shares Granted	0
Common Shares Exercised	(6,055,000)
Common Shares Forfeited/expired	(39,556)
Common Shares, Balance, end of period	211,469
Weighted Average Exercise Price per share, Balance, beginning of period (in dollars per share)	$ 70.12
Weighted Average Exercise Price per share, Granted (in dollars per share)	$ 0
Weighted Average Exercise Price per share, Exercised (in dollars per share)	$ 11.55
Weighted Average Exercise Price per share, Forfeited/expired (in dollars per share)	$ 74.31
Weighted Average Exercise Price per share, Balance, end of period (in dollars per share)	$ 71.01