Stockholders' Equity (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2017 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions [Table Text Block] |
The fair value associated with the market award vesting was determined utilizing a binomial valuation methodology and the following assumptions:
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| Share-based Compensation, Stock Options, Activity [Table Text Block] |
The following table summarizes stock option activities for the year ended December 31, 2017:
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| Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] |
A summary of warrant activities for years ended December 31, 2017 is presented below:
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| Restricted Stock [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
The following table summarizes restricted stock award activities for the year ended December 31, 2017:
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| Restricted Stock Units (RSUs) [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
The following table summarizes restricted stock units activities for the year ended December 31, 2017:
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