Share-based Compensation - Summary of Activity Relating to Company's ESPP Program (Detail) - USD ($) |
12 Months Ended | |
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Dec. 31, 2016 |
Dec. 31, 2015 |
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| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | ||
| Compensation expense | $ 113,531 | $ 40,233 |
| Shares of stock sold to employees | 88,109 | 98,070 |
| Weighted average fair value per ESPP award | $ 2.73 | $ 2.73 |
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- Definition Employee Stock Purchase Plan Weighted Average Purchase Price Of Shares Purchased No definition available.
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- References No definition available.
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- Definition The amount of plan compensation cost recognized during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Number of shares issued during the period as a result of an employee stock purchase plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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