Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Allowance for doubtful accounts	$ 30,137	$ 29,361
Shareholders' equity:
Common stock par value (in dollars per share)	$ 0.001	$ 0.001
Common stock shares authorized	50,000,000	50,000,000
Common stock shares issued	22,228,834	22,228,834
Common stock shares outstanding	22,228,834	22,228,834