Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands |
May 24, 2016 |
Dec. 31, 2017 |
|---|---|---|
| Exercise price (in dollars per share) | $ 8.45 | |
| Interstate Battery System International, Inc. [Member] | Warrant #1 [Member] | ||
| Warrant shares issued | 702,247 | |
| Market price | $ 11.39 | |
| Exercise price (in dollars per share) | $ 7.12 | |
| Term (years) | 2 years | |
| Risk-free interest rate | 0.91% | |
| Volatility | 65.70% | |
| Dividend rate | 0.00% | |
| Per share FV of warrant | $ 5.89 | |
| FV of warrant | $ 4,136 | |
| Interstate Battery System International, Inc. [Member] | Warrant #2 [Member] | ||
| Warrant shares issued | 1,605,131 | |
| Market price | $ 11.39 | |
| Exercise price (in dollars per share) | $ 9.00 | |
| Term (years) | 3 years | |
| Risk-free interest rate | 1.05% | |
| Volatility | 67.80% | |
| Dividend rate | 0.00% | |
| Per share FV of warrant | $ 5.89 | |
| FV of warrant | $ 9,450 |
| X | ||||||||||
- Definition Period of maturity of warrants, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
| X | ||||||||||
- Definition The per share fair value of the warrant based on listed assumptions. No definition available.
|
| X | ||||||||||
- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Risk-free interest rate assumption used in valuing an instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Price of a single share of a number of saleable stocks of a company. No definition available.
|
| X | ||||||||||
- Definition Fair value portion of warrants not settleable in cash classified as equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|