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Accrued Liabilities (Detail) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Schedule of Accrued Liabilities [Line Items]    
Interest $ 248,763 $ 0
Royalties 235,772 351,846
Payroll 119,937 77,757
Rent 78,797 0
Miscellaneous 30,125 16,831
Total accrued liabilities 896,740 446,434
Redeemable Preferred Stock
   
Schedule of Accrued Liabilities [Line Items]    
10% convertible preferred stock dividends $ 183,346 $ 0