Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Condensed Consolidated Balance Sheets
Trade accounts receivable, allowance (in dollars)	$ 0	$ 65,000
Property and equipment, accumulated depreciation (in dollars)	231,988	197,971
Patents, accumulated amortization (in dollars)	$ 1,941	$ 50,725
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	5,250	5,250
Preferred stock, shares outstanding	1	1
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	5,000,000	5,000,000
Common stock, shares issued	2,570,531	2,143,631
Common stock, shares outstanding	2,562,488	2,135,588
Treasury stock, shares	8,043	8,043