Significant Accounting Policies - Additional Information (Detail) - USD ($) |
Jun. 30, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Accounting Policies [Abstract] | ||
| Uninsured portion of cash balance | $ 25,469,626 | $ 19,958,301 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation. No definition available.
|