SHAREHOLDERS' EQUITY (DETAILS 2) In Thousands, unless otherwise specified			3 Months Ended		6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Common Stock [Member]	Jun. 30, 2011 Common Stock [Member]	Jun. 30, 2012 Common Stock [Member]	Jun. 30, 2011 Common Stock [Member]
Class of Stock [Line Items]
Shares issued, balance at beginning of period	171,468	170,159	171,408	156,820	170,159	154,912
Shares issued			60	11,917	1,309	13,825
Total shares issued at end of period	171,468	170,159	171,468	168,737	171,468	168,737
Treasury shares, balance at beginning of period	(48,695)	(44,571)	(46,043)	(42,918)	(44,571)	(42,519)
Shares repurchased			(2,652)	(8)	(4,124)	(407)
Total treasury shares at end of period	(48,695)	(44,571)	(48,695)	(42,926)	(48,695)	(42,926)
Total shares outstanding	122,773	125,588	122,773	125,811	122,773	125,811