Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Accounts receivable, allowance for doubtful accounts	$ 429,186	$ 652,449
Current liabilities:
Notes payable - current portion, related party notes	607,999	32,009
Notes payable - excluding current portion, related party notes	1,440,015	798,014
Redeemable Convertible Preferred Stock [Member]
Statement [Line Items]
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, shares outstanding (in shares)	293,057	293,057
Common Stock [Member]
Statement [Line Items]
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)	9,154,953	9,154,953