Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Accounts receivable, allowance for doubtful accounts	$ 652,449	$ 694,083
Current liabilities:
Notes payable - current portion, related party notes	32,009	32,009
Notes payable - excluding current portion, related party notes	798,014	830,024
Stockholders' equity:
Redeemable convertible preferred stock, par value (in dollars per share)	$ 0.05	$ 0.05
Redeemable convertible preferred stock, shares authorized (in shares)	2,500,000	2,500,000
Redeemable convertible preferred stock, shares issued (in shares)	293,057	293,057
Redeemable convertible preferred stock, shares outstanding (in shares)	293,057	293,057
Redeemable convertible preferred stock, liquidation preference	$ 1,465,285	$ 1,465,285
Common stock, par value (in dollars per share)	$ 0.05	$ 0.05
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	9,154,953	9,154,953
Common stock, shares outstanding (in shares)	4,654,953	4,654,953