Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Sep. 30, 2011	Dec. 31, 2010
Stockholders' equity:
Common stock, par value (in dollars per share)	$ 0.05	$ 0.05
Common stock, authorized (in shares)	15,000,000	15,000,000
Common stock, issued (in shares)	5,237,923	5,193,891
Common stock, outstanding (in shares)	5,237,923	5,193,891