Debt - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Nov. 15, 2013
Debt Instrument [Line Items]
Convertible debt	$ 36,959,053		$ 36,959,053		$ 32,258,031
Amortization of convertible debt discount			$ 1,389,122	$ 859,086
Debt Conversion, Converted Instrument, Shares Issued			19,982,022
Debt Instrument, Unamortized Discount	2,971,525		$ 2,971,525		4,360,647
Interest Paid, Total			$ 193,646	150,124
Debt Instrument Maturity Month and Year			Aug. 31, 2017
8% convertible promissory notes 2012
Debt Instrument [Line Items]
Convertible debt	$ 15,628,188		$ 15,628,188
Warrants to purchase common stock, shares	37,800,000		37,800,000
Amortization of convertible debt discount	$ 356,922	$ 468,673	$ 743,239	848,468
Debt Issuance Cost			146,741
Debt Instrument, Unamortized Discount	1,700,000		1,700,000
Interest Expense, Other	336,259	340,014	683,848	605,896
Debt Instrument, Increase, Accrued Interest			336,259
8% convertible promissory notes 2012 | Common Stock [Member]
Debt Instrument [Line Items]
Convertible debt	$ 1,000,000		$ 1,000,000
Convertible debt, conversion price	$ 0.74		$ 0.74
Common Stock, Par or Stated Value Per Share	$ 0.40		$ 0.40
MLTM And Samuel Rose 12% convertible revolving credit agreement conversion options
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity						$ 2,000,000
Line of Credit Facility, Interest Rate During Period						12.00%
Line Of Credit Facility Interest Rate During Period Payable By Cash						4.00%
Line Of Credit Facility Interest Rate During Period Payable By Common Stock			8.00%
Line of Credit Facility, Amount Outstanding	$ 140,000		$ 140,000			$ 2,000,000
Line Of Credit Facility Periodic Payment Shares			600,000
Line Of Credit Facility Commission Fee Rate During Period Payable By Cash			2.00%
Line Of Credit Facility Commission Fee Rate During Period Payable By Common Stock			4.00%
MLTM And Samuel Rose 12% convertible revolving credit agreement conversion options | Common Stock [Member]
Debt Instrument [Line Items]
Line Of Credit Facility Periodic Payment Shares			200,000
MLTM And Samuel Rose 12% convertible Letter Of credit agreement conversion options
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity						500,000
Bank Term Loan One
Debt Instrument [Line Items]
Debt Instrument, Face Amount						$ 1,000,000
Debt Instrument, Interest Rate at Period End						4.25%
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months						$ 100,000
Long-term Debt, Maturities, Repayments of Principal in Year Three						$ 250,000
Debt Instrument Maturity Month and Year						Nov. 15, 2018
Bank Term Loan Two
Debt Instrument [Line Items]
Debt Instrument, Face Amount						$ 3,500,000
Debt Instrument Maturity Month and Year						Nov. 15, 2018
Samuel Rose 12% convertible revolving credit agreement conversion options
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	300,000		$ 300,000
3% promissory note
Debt Instrument [Line Items]
Convertible debt	236,201		236,201		279,843
Convertible debt, interest rate							3.00%
Interest Expense, Other	1,881	2,528	$ 3,926	5,214
Debt Instrument Maturity Month and Year			Feb. 01, 2018
12% Revolving Credit Agreement
Debt Instrument [Line Items]
Amortization of convertible debt discount	29,378	40,307		96,920
Debt Instrument, Unamortized Discount	70,641		$ 70,641
Interest Expense, Other	62,667	60,054	$ 124,474	127,111
Interest Paid, Total	22,222
Stock Issued During Period, Shares, New Issues			400,000
12% Revolving Credit Agreement | Common Stock [Member]
Debt Instrument [Line Items]
Interest Paid, Total	40,445
4.25% Bank Term Loans
Debt Instrument [Line Items]
Interest Expense, Other	47,800	48,875
Interest Paid, Total			$ 94,562	96,688
12% Convertible Promossory Notes
Debt Instrument [Line Items]
Convertible debt	1,000,000		1,000,000		1,000,000
Interest Expense, Other	30,333		$ 60,333
Debt Instrument Maturity Month and Year			Jun. 30, 2015
12% Convertible Promossory Notes | Investor
Debt Instrument [Line Items]
Convertible debt					$ 1,000,000
Convertible debt, interest rate					12.00%
Debt Instrument Percentage Of Conversion Price					85.00%
Debt Instrument Maturity Month and Year					Jun. 30, 2015
5% Bank Promissory Note
Debt Instrument [Line Items]
Convertible debt	4,000,000		$ 4,000,000		$ 4,000,000
Interest Expense, Other	$ 50,556		$ 100,556
Debt Instrument Maturity Month and Year			Sep. 18, 2017
8% convertible promissory notes 2014
Debt Instrument [Line Items]
Convertible debt					$ 2,000,000
Convertible debt, interest rate	8.00%		8.00%		8.00%
Amortization of convertible debt discount	$ 259,840		$ 541,080
Debt Conversion, Converted Instrument, Shares Issued					7,500,000
Debt Instrument, Unamortized Discount	1,200,000		1,200,000
Interest Expense, Other	40,444		80,444
Interest Paid, Total		$ 6,444		$ 6,444
12% secured notes
Debt Instrument [Line Items]
Convertible debt	$ 6,394,664		$ 6,394,664		$ 1,950,000
Convertible debt, interest rate	12.00%		12.00%
Interest Expense, Other	$ 193,971		$ 333,141
Debt Instrument Maturity Month and Year			Jun. 30, 2015
Term Bank Loans | 5% Bank Promissory Note
Debt Instrument [Line Items]
Convertible debt					$ 4.0
Convertible debt, interest rate					5.00%
Debt Instrument Maturity Month and Year					Sep. 18, 2017