PREFERRED STOCK PURCHASE RIGHTS (Details) (USD $)			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Preferred stock purchase rights plan item	Dec. 31, 2012 Preferred stock purchase rights plan Series B junior participating preferred stock item
Preferred Stock Purchase Rights
Preferred share purchase right on each share of common stock			0.5
Minimum percentage of common stock acquired by a person or group to entitle right holder to purchase entity's common stock having market value twice the exercise price			15.00%
Number of shares callable by warrants or rights				0.001
Par value of preferred stock (in dollars per share)	$ 0.01	$ 0.01		$ 0.01
Purchase price of preferred stock (in dollars per share)				$ 150
Number of voting rights for each share of preferred stock				2,000
Minimum preferential quarterly dividend payment per share (in dollars per share)				$ 1
Minimum preferential quarterly dividend payment in multiplier of amount paid to holders of common stock				2,000
Preferred stock reserved (in shares)				99,000
Redemption price per right at the option of the Board of Directors (in dollars per right)			0.01