Income Taxes - Additional Information (Detail) - USD ($) |
1 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2009 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2013 |
Dec. 31, 2014 |
|
| Income Tax Disclosure [Line Items] | |||||
| Valuation Allowance | $ 33,787,134 | $ 31,199,403 | |||
| Net change in valuation allowance related to deferred tax assets | 2,587,731 | 4,271,483 | |||
| Federal and state tax net operating loss carryforwards | $ 87,663,000 | ||||
| Federal and state tax loss carryforward expiration date | Dec. 31, 2036 | ||||
| Change in ownership | 50.00% | 50.00% | |||
| Annual amount of pre-change net operating losses | $ 417,000 | $ 3,540,000 | |||
| Additional unrecognized tax benefits | $ 166,871 | 353,814 | |||
| Tax positions | 1,875,337 | 1,708,466 | $ 1,354,652 | ||
| Interest and penalties | 0 | $ 0 | |||
| Research and Development Tax Credit [Member] | |||||
| Income Tax Disclosure [Line Items] | |||||
| Federal research and development tax credit carryforwards | $ 1,875,000 | ||||
| Federal tax credit carryforward | Dec. 31, 2026 | ||||
| X | ||||||||||
- Definition Income tax disclosure. No definition available.
|
| X | ||||||||||
- Definition Use of the Companys net operating losses and credit carryforwards are limited due to a cumulative change in ownership of more than this amount. No definition available.
|
| X | ||||||||||
- Definition The annual amount of pre-change net operating losses that may be used in periods subsequent to and as a result of the 50% change in ownership. No definition available.
|
| X | ||||||||||
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Expiration date of each operating loss carryforward included in operating loss carryforward, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Expiration date of the tax credit carryforward, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|