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v3.7.0.1

Subsequent Events (Details) $ / shares in Units, $ in Millions |  | 1 Months Ended | 4 Months Ended
--- | --- | --- | ---
May 03, 2017 USD ($) $ / shares shares | Jun. 30, 2017 MW | Sep. 30, 2017 Employee
Scenario, Forecast [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Number of manufacturing employees | Employee |  |  | 110
Reduction in production capacity due to production rate adjustment | MW |  | 15 |
Underwritten Public Offering [Member] | Subsequent Event [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Shares of common stock | shares | 12,000,000 |  |
Gross proceeds from common stock and warrants | $ | $ 15.4 |  |
Common stock price per share | $ 1.28 |  |
Net proceeds from common stock and warrants | $ | $ 13.8 |  |
Underwritten Public Offering [Member] | Series C Warrants [Member] | Subsequent Event [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Class of warrants or rights issued | shares | 12,000,000 |  |
Warrants issued, price per share | $ 1.28 |  |
Class of warrant or right, exercise price per share | $ 1.28 |  |
Class of warrant or right term | 1 year |  |
Underwritten Public Offering [Member] | Series D Warrants [Member] | Subsequent Event [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Class of warrants or rights issued | shares | 12,000,000 |  |
Warrants issued, price per share | $ 1.28 |  |
Class of warrant or right, exercise price per share | $ 1.60 |  |
Class of warrant or right term | 5 years |  |

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