Stock Options and Warrants - Summary of Outstanding Warrants Related to Warrant Transactions (Detail) - $ / shares
 6 Months Ended 12 Months Ended
Jun. 11, 2014
Jun. 30, 2015
Dec. 31, 2014
Dec. 31, 2013
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   850,058 299,895 3,500,000
Warrants, Issued     837,602 64,983,988
Warrants, Exchanged (243,699)   (248,144)  
Warrants, Exercised   (64,113) (39,295) (16,954,822)
Warrants, Forfeited/Cancelled   (206,815)   (6,545,178)
Number of Shares, Outstanding, Ending balance   579,130 850,058 299,895
Weighted Average Exercise Price, Issued     $ 8.00  
Weighted Average Exercise Price, Exchanged     22.00  
Weighted Average Exercise Price, Exercised     $ 8.00  
Weighted Average Exercise Price, Forfeited/Cancelled   $ 12    
Skin Care [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   1,334 1,334 200,000
Number of Shares, Outstanding, Ending balance   1,334 1,334 1,334
January Two Thousand Thirteen Financing        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   33,750 33,750  
Warrants, Issued       5,062,500
Number of Shares, Outstanding, Ending balance   33,750 33,750 33,750
March Two Thousand Thirteen Financing        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   16,667 16,667  
Warrants, Issued       2,500,000
Number of Shares, Outstanding, Ending balance   16,667 16,667 16,667
Series A Warrants [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance       1,600,000
Warrants, Forfeited/Cancelled       (1,600,000)
Series B Warrants [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance       300,000
Warrants, Forfeited/Cancelled       (300,000)
YKA Loan [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance       1,400,000
Warrants, Forfeited/Cancelled       (1,400,000)
Previously Reported [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   127,508,118 44,983,988  
Warrants, Issued     125,639,832  
Warrants, Exchanged (36,554,822)   (37,221,488)  
Warrants, Exercised     (5,894,214)  
Number of Shares, Outstanding, Ending balance     127,508,118 44,983,988
Weighted Average Exercise Price, Issued     $ 0.06  
Weighted Average Exercise Price, Exchanged     0.15  
Weighted Average Exercise Price, Exercised     $ 0.06  
Previously Reported [Member] | Skin Care [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   200,000 200,000  
Number of Shares, Outstanding, Ending balance     200,000 200,000
Previously Reported [Member] | January Two Thousand Thirteen Financing        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   5,062,500 5,062,500  
Number of Shares, Outstanding, Ending balance     5,062,500 5,062,500
Previously Reported [Member] | March Two Thousand Thirteen Financing        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   2,500,000 2,500,000  
Number of Shares, Outstanding, Ending balance     2,500,000 2,500,000
October 2014 Financing [Member] | Series A Common Stock [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   258,519    
Warrants, Issued     258,519  
Number of Shares, Outstanding, Ending balance   258,519 258,519  
October 2014 Financing [Member] | Series B Common Stock [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   219,224    
Warrants, Issued     258,519  
Warrants, Exercised   (12,409) (39,295)  
Warrants, Forfeited/Cancelled   (206,815)    
Number of Shares, Outstanding, Ending balance     219,224  
October 2014 Financing [Member] | Series C Common Stock [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   258,519    
Warrants, Issued     258,519  
Warrants, Exercised   (51,704)    
Number of Shares, Outstanding, Ending balance   206,815 258,519  
October 2014 Financing [Member] | Placement Agent [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   62,045    
Warrants, Issued     62,045  
Number of Shares, Outstanding, Ending balance   62,045 62,045  
October 2014 Financing [Member] | Previously Reported [Member] | Series A Common Stock [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   38,777,726    
Warrants, Issued     38,777,726  
Number of Shares, Outstanding, Ending balance     38,777,726  
October 2014 Financing [Member] | Previously Reported [Member] | Series B Common Stock [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   32,883,512    
Warrants, Issued     38,777,726  
Warrants, Exercised     (5,894,214)  
Number of Shares, Outstanding, Ending balance     32,883,512  
October 2014 Financing [Member] | Previously Reported [Member] | Placement Agent [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   9,306,654    
Warrants, Issued     9,306,654  
Number of Shares, Outstanding, Ending balance     9,306,654  
October 2014 Financing [Member] | Previously Reported [Member] | Series C warrants [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance   38,777,726    
Warrants, Issued     38,777,726  
Number of Shares, Outstanding, Ending balance     38,777,726  
July 2013 Financing [Member] | Series A Common Stock [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance     243,699  
Warrants, Issued       36,754,822
Warrants, Exchanged     (243,699)  
Warrants, Exercised       (200,000)
Number of Shares, Outstanding, Ending balance       243,699
July 2013 Financing [Member] | Series B Common Stock [Member]        
Class of Warrant or Right [Line Items]        
Warrants, Issued       20,000,000
Warrants, Exercised       (16,754,822)
Warrants, Forfeited/Cancelled       (3,245,178)
July 2013 Financing [Member] | Placement Agent [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance     4,445  
Warrants, Issued       666,666
Warrants, Exchanged     (4,445)  
Number of Shares, Outstanding, Ending balance       4,445
July 2013 Financing [Member] | Previously Reported [Member] | Series A Common Stock [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance     36,554,822  
Warrants, Exchanged     (36,554,822)  
Number of Shares, Outstanding, Ending balance       36,554,822
July 2013 Financing [Member] | Previously Reported [Member] | Placement Agent [Member]        
Class of Warrant or Right [Line Items]        
Number of Shares, Outstanding, Beginning balance     666,666  
Warrants, Exchanged     666,666  
Number of Shares, Outstanding, Ending balance       666,666
Weighted Average [Member]        
Class of Warrant or Right [Line Items]        
Weighted Average Exercise Price, Outstanding, Beginning balance   $ 10.00 $ 25.00 $ 0.34
Weighted Average Exercise Price, Issued     9.00 0.16
Weighted Average Exercise Price, Exchanged     22.00  
Weighted Average Exercise Price, Exercised   6.00 8.00 0.15
Weighted Average Exercise Price, Forfeited/Cancelled   12.00   0.20
Weighted Average Exercise Price, Outstanding, Ending balance   9.00 10.00 25.00
Weighted Average [Member] | Previously Reported [Member]        
Class of Warrant or Right [Line Items]        
Weighted Average Exercise Price, Outstanding, Beginning balance   0.07 0.17  
Weighted Average Exercise Price, Issued     0.06  
Weighted Average Exercise Price, Exchanged     0.15  
Weighted Average Exercise Price, Exercised     0.06  
Weighted Average Exercise Price, Outstanding, Ending balance     0.07 0.17
Minimum [Member]        
Class of Warrant or Right [Line Items]        
Weighted Average Exercise Price, Outstanding, Beginning balance   9 22.5 0.25
Weighted Average Exercise Price, Issued       0.15
Weighted Average Exercise Price, Exercised   6   0.15
Weighted Average Exercise Price, Forfeited/Cancelled       0.15
Weighted Average Exercise Price, Outstanding, Ending balance   6 9 22.5
Minimum [Member] | Previously Reported [Member]        
Class of Warrant or Right [Line Items]        
Weighted Average Exercise Price, Outstanding, Beginning balance   0.06 0.15  
Weighted Average Exercise Price, Outstanding, Ending balance     0.06 0.15
Maximum [Member]        
Class of Warrant or Right [Line Items]        
Weighted Average Exercise Price, Outstanding, Beginning balance   300 300 2.00
Weighted Average Exercise Price, Issued       0.20
Weighted Average Exercise Price, Exercised   9   0.15
Weighted Average Exercise Price, Forfeited/Cancelled       0.25
Weighted Average Exercise Price, Outstanding, Ending balance   300 300 300
Maximum [Member] | Previously Reported [Member]        
Class of Warrant or Right [Line Items]        
Weighted Average Exercise Price, Outstanding, Beginning balance   $ 2.00 2.00  
Weighted Average Exercise Price, Outstanding, Ending balance     $ 2.00 $ 2.00