PREFERRED AND PREFERENCE STOCK (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2011 Preferred stock	Dec. 31, 2011 Series A Participating Preference Stock	Dec. 31, 2011 Cumulative preferred stock	Jul. 25, 2010 Common Stock right
Preferred stock authorized (in shares)	2.5	0.5	5.0
Preferred stock par value per share (in dollars per share)			$ 10.00
Number of preferred stock purchase rights for each share of common stock owned				1