CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012
CONDENSED CONSOLIDATED BALANCE SHEETS
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, par value (in dollars per share)	$ 0.025	$ 0.025
Common stock, shares authorized	140,000,000	140,000,000
Common stock, shares issued	95,747,142	107,637,524
Common stock, shares outstanding	95,747,142	107,637,524