10% Convertible Redeemable Preferred Stock - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended		1 Months Ended												12 Months Ended			12 Months Ended
	Nov. 10, 2004	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2013 10% Convertible Preferred Stock	Oct. 31, 2013 10% Convertible Preferred Stock	Jul. 31, 2013 10% Convertible Preferred Stock	Apr. 30, 2013 10% Convertible Preferred Stock	Feb. 28, 2013 10% Convertible Preferred Stock	Dec. 31, 2012 10% Convertible Preferred Stock	Sep. 30, 2012 10% Convertible Preferred Stock	Jul. 31, 2012 10% Convertible Preferred Stock	Jun. 30, 2012 10% Convertible Preferred Stock	May 31, 2012 10% Convertible Preferred Stock	Mar. 31, 2012 10% Convertible Preferred Stock	Dec. 31, 2011 10% Convertible Preferred Stock	Dec. 31, 2013 10% Convertible Preferred Stock	Dec. 31, 2012 10% Convertible Preferred Stock	Dec. 31, 2011 Preferred Stock	Dec. 31, 2013 Beneficial Conversion Feature	Dec. 31, 2012 Beneficial Conversion Feature	Dec. 31, 2013 Minimum
Temporary Equity [Line Items]
10% Convertible preferred stock, authorized			880,000	880,000					880,000						880,000	880,000	880,000
10% Convertible preferred stock, stated value			$ 10.00
Minimum weighted average price of common stock for 60 consecutive trading days to convert preferred stock																					$ 4.00
10% Convertible preferred stock, conversion rate			$ 1.00															$ 1.00
Warrant exercise price			1.00	10												10
10% Convertible preferred stock, issued			759,773	694,623					706,023							694,623	706,023
10% Convertible preferred stock, issuance price per share			$ 10															$ 1.00
10% Convertible preferred stock, gross proceeds from issuance			$ 7,597,730
10% Convertible preferred stock, unamortized discount		221,400																828,340
Conversion rate at issuance			2,100,000
Amortization of preferred stock discount																			$ 900,000	$ 1,100,000
Common stock issued upon conversion Preferred Stock, shares	1,701,341			75,000				39,000					20,000	62,500		75,000	462,500
Preferred Stock shares converted				7,500				3,900						6,250					7,500	46,250
Common stock shares required to be issued if the remaining holders of Preferred Stock elect to convert		6,900,000
Common stock dividends, shares		181,500			347,039	342,857	266,954		472,433	473,599	200,000	392,828	200,000	286,251	247,538
Shares of stock called by warrants				58,352												58,352