CAPITAL STOCK (Tables)

12 Months Ended

Dec. 31, 2011

CAPITAL STOCK

Shedule of number of shares of common stock and treasury stock and the share activity

	Common Shares				Treasury Shares
	2011		2010		2011			2010
Balance at the beginning of the year		81,796,938		80,596,075		15,047,020			13,288,619
Employee option exercises		933,175		1,141,488		(196,817	)		(244,523	)
Director option exercises		34,500		50,000		—			—
Restricted stock vestings		8,709		9,375		—			—
Common stock repurchases		—		—		2,070,819			2,002,924
Balance at the end of the year		82,773,322		81,796,938		16,921,022			15,047,020