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v3.7.0.1

Commitments and Contingencies - Additional Information (Detail) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2015 USD ($) | Nov. 30, 2015 USD ($) shares | Jan. 31, 2015 | Jun. 30, 2017 USD ($) Amendments | Jun. 30, 2016 USD ($) | Jun. 30, 2017 USD ($) Amendments Milestone | Jun. 30, 2016 USD ($) Milestone | Dec. 31, 2015 USD ($)
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Rental expense |  |  |  | $ 141,000 | $ 46,000 | $ 182,000 | $ 105,000 |
Number of milestones achieved | Milestone |  |  |  |  |  | 0 | 0 |
Indemnification obligations amount |  |  |  | 0 |  | $ 0 |  |
Contingent liabilities |  |  |  | $ 0 |  | $ 0 |  |
License Agreement [Member] |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Sales based milestone payment | $ 36,000,000 |  |  |  |  |  |  | $ 36,000,000
Royalty payment period | 8 years |  |  |  |  |  |  |
License Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Development and regulatory milestone payments | $ 42,100,000 |  |  |  |  |  |  | 42,100,000
License Agreement [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Sales required to achieve milestone payment | 1,000,000,000 |  |  |  |  |  |  |
Office of Chief Scientist [Member] |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Grants received | 537,000 |  |  |  |  |  |  | 537,000
Scientific Development and Research, Inc. and Otodyne, Inc. [Member] | License Agreement [Member] |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
License fees paid |  | $ 700,000 |  |  |  |  |  |
Share issued as consideration | shares |  | 9,780 |  |  |  |  |  |
UMB [Member] | Master License Agreement [Member] |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Number of amendments | Amendments |  |  |  | 4 |  | 4 |  |
Annual maintenance fee |  |  |  |  |  | $ 10,000 |  |
Percentage of non-royalty sub license income |  |  |  |  |  | 10.00% |  |
UMB [Member] | Master License Agreement [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Annual royalty |  |  |  |  |  | $ 50,000 |  |
UMB [Member] | Master License Agreement [Member] | IND [Member] | Upon Filing IND Application For Licensed Product [Member] |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Milestone payment |  |  |  |  |  | 50,000 |  |
UMB [Member] | Master License Agreement [Member] | IND [Member] | Upon FDA Approval [Member] |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Milestone payment |  |  |  |  |  | 100,000 |  |
UMB [Member] | Master License Agreement [Member] | Investigational Drug Application Non Prostate Disease [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Aggregate milestone payments associated with development of licensed product |  |  |  |  |  | $ 150,000 |  |
Johns Hopkins [Member] | License Agreement [Member] |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Percentage of non-royalty sub license income |  |  | 20.00% |  |  |  |  |
Potential milestone payments under license agreement |  |  |  |  |  |  |  | 700,000
Milestone payments expensed during period |  |  |  |  |  |  |  | 50,000
Additional liabilities for milestone payments | $ 0 |  |  |  |  |  |  | 0
Johns Hopkins [Member] | License Agreement [Member] | Research and Development [Member] |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Upfront payment |  |  |  |  |  |  |  | 75,000
Johns Hopkins [Member] | License Agreement [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Annual royalty |  |  |  |  |  |  |  | $ 30,000

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