Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Accounts receivable, allowance for doubtful accounts	$ 66,000	$ 76,000
Inventory, allowance for slow moving and obsolete inventory	$ 207,000	$ 213,000
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, issued	21,744,768	21,744,768
Common stock, outstanding	21,744,768	21,744,768