Other Assets - Additional Information (Detail) - Thera Neuropharma, Inc [Member] |
6 Months Ended |
|---|---|
|
Jun. 30, 2016
USD ($)
$ / shares
| |
| Other Assets [Line Items] | |
| Cost method ownership percentage threshold | 20.00% |
| Term of warrant | 5 years |
| Common stock, warrants per share | $ / shares | $ 0.001 |
| Other Assets [Member] | |
| Other Assets [Line Items] | |
| Investment value | $ 4,500 |
| Value of warrant | $ 4,500 |