Balance Sheet Parenthetical (USD $)	Sep. 30, 2011	Dec. 31, 2010
Treasury stock outstanding	1,074,499	1,073,207
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	15,797,667	15,463,995
Common stock, shares outstanding	14,723,168	14,390,788
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0