Debt - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Nov. 15, 2013
Debt Instrument [Line Items]
Convertible debt	$ 36,680,956		$ 32,258,031
Convertible debt, interest rate	12.00%
Amortization of convertible debt discount	742,982	436,408
Debt Instrument, Face Amount	888,888
Debt Instrument, Unamortized Discount	3,617,665		4,360,647
Interest Paid, Total	187,039	75,312
Debt Instrument Maturity Month and Year	Aug. 31, 2017
8% convertible promissory notes 2012
Debt Instrument [Line Items]
Convertible debt	15,628,188
Warrants to purchase common stock, shares	37,800,000
Debt Instrument Payment Terms	including all outstanding principal and accrued and unpaid interest, are due and payable on the earlier of five years from date of issuance or upon the occurrence of an Event of Default
Amortization of convertible debt discount	386,317	379,795
Debt Issuance Cost	146,700
Debt Instrument, Unamortized Discount	2,100,000
Interest Expense, Other	347,589	265,882
Debt Instrument, Increase, Accrued Interest	347,589
Stock Issued During Period, Shares, New Issues	1,121,256
8% convertible promissory notes 2012 | Common Stock [Member]
Debt Instrument [Line Items]
Convertible debt	1,000,000
Convertible debt, conversion price	$ 0.74
Common Stock, Par or Stated Value Per Share	$ 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	2,000,000
Line Of Credit Facility Periodic Payment Shares	200,000		200,000	200,000
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 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
3% promissory note
Debt Instrument [Line Items]
Convertible debt	258,104		279,843
Convertible debt, interest rate					3.00%
Interest Expense, Other	2,045	2,904
Debt Instrument Maturity Month and Year	Feb. 01, 2018
12% Revolving Credit Agreement
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount	41,263	56,613
Interest Expense, Other	61,807	67,058
Interest Paid, Total	20,000
Stock Issued During Period, Shares, New Issues	400,000
12% Revolving Credit Agreement | Common Stock [Member]
Debt Instrument [Line Items]
Interest Paid, Total	41,807
4.25% Bank Term Loans
Debt Instrument [Line Items]
Interest Expense, Debt	46,761	47,812
12% Convertible Promossory Notes
Debt Instrument [Line Items]
Convertible debt	1,000,000		1,000,000
Interest Expense, Other	30,000
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
Interest Expense, Other	50,000
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%
Amortization of convertible debt discount	281,240
Debt Conversion, Converted Instrument, Shares Issued			7,500,000
Debt Instrument, Unamortized Discount	1,500,000
Interest Expense, Other	40,000
12% secured notes
Debt Instrument [Line Items]
Convertible debt	6,394,664		1,950,000
Convertible debt, interest rate	12.00%
Interest Expense, Other	137,403
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