SHARE CAPITAL (Detail) - Summary of stock options and related activity (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Outstanding – beginning of year	13,794
Outstanding – beginning of year (in Dollars per share)	$ 50.71
Outstanding – beginning of year	5.1 years
Outstanding – beginning of year (in Dollars)	$ 30,362
Granted	974	1,023	1,269
Granted (in Dollars per share)	$ 23.34
Exercised	(72)
Exercised (in Dollars per share)	$ 18.52
Canceled/Expired	(1,699)
Canceled/Expired (in Dollars per share)	$ 70.11
Outstanding – end of year	12,997	13,794
Outstanding – end of year (in Dollars per share)	$ 46.30	$ 50.71
Outstanding – end of year	4.9 years	5.1 years
Outstanding – end of year (in Dollars)	20,585	30,362
Options exercisable	10,933
Options exercisable (in Dollars per share)	$ 51.54
Options exercisable	4.2 years
Options exercisable (in Dollars)	$ 14,801
Options available for grant (1)	22,142