Consolidated Balance Sheets [Parenthetical] (USD $)	Jun. 30, 2011	Dec. 31, 2010
Allowance for accounts receivable (in dollars)	$ 68,600	$ 67,100
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	3,000,000	3,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	14,425,185	14,425,185
Common stock, shares oustanding	12,423,674	12,450,808