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v3.3.1.900

Subsequent Events (Details) - USD ($) |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Aug. 08, 2016 | Feb. 09, 2016 | Aug. 11, 2015 | Jan. 29, 2016 | Jul. 31, 2015 | Feb. 28, 2015 | Oct. 31, 2013 | May. 31, 2012 | Dec. 31, 2013 | Mar. 17, 2016
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Minimum bid price per share required to regain compliance with listing qualifications |  |  | $ 1.00 |  |  |  |  |  |  |
Stock market granted consecutive trading days preceding the date of notice |  |  | 30 days |  |  |  |  |  |  |
Common stock sold through the program (in shares) |  |  |  |  | 9,400,000 | 2,500,000 | 1,300,000 | 1,000,000 | 0 |
Net proceeds from issuance of common stock |  |  |  |  | $ 6,000,000 |  |  |  |  |
ATM Programs [Member] | Series A and B Common Stock Warrants [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Adjusted exercise price of Warrants (in dollars per share) |  |  |  |  | $ 0.355 | $ 0.355 |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Minimum bid price per share required to regain compliance with listing qualifications |  | $ 1.00 |  |  |  |  |  |  |  |
Stock market granted additional calendar days | 180 days |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Series B Common Stock Warrants [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Warrants Exercised (in shares) |  |  |  | 2,200,000 |  |  |  |  |  |
Net proceeds from exercise of warrants |  |  |  | $ 800,000 |  |  |  |  |  |
Remaining outstanding warrants expired |  |  |  | 7,100,000 |  |  |  |  |  |
Subsequent Event [Member] | ATM Programs [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock sold through the program (in shares) |  | 50,000 |  |  |  |  |  |  |  |
Net proceeds from issuance of common stock |  | $ 17,500 |  |  |  |  |  |  |  |
Aggregate proceeds from sale of common stock under equity offering program, remaining |  |  |  |  |  |  |  |  |  | $ 39,900,000

X
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