CONDENSED CONSOLIDATED BALANCE SHEET (Parenthetical) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	48,390,463	48,076,860
Treasury stock, shares	16,582	16,582