Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Accounts receivable, allowance for doubtful accounts	$ 512,282	$ 429,186
Current liabilities:
Notes payable - current portion, related party notes	1,391,663	607,999
Notes payable - excluding current portion, related party notes	648,349	1,440,015
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 [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