Related-Party Transactions - Additional Information (Detail) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
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| Former Member of Board of Directors [Member] | ||||
| Related Party Transaction [Line Items] | ||||
| Advisory fee paid to related party | $ 15,000 | $ 15,000 | $ 30,000 | $ 30,000 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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| X | ||||||||||
- Definition Fees paid to advisors who provide certain management support and administrative oversight services including the organization and sale of stock, investment funds, limited partnerships and mutual funds. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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