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Related-Party Transactions - Details of Amounts Due to Related Parties on Our Accompanying Condensed Consolidated Balance Sheets (Detail) - USD ($) | Sep. 30, 2015 | Dec. 31, 2014
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Related Party Transactions [Abstract] |  |  |
Management fee due to Adviser |  | $ 356,871 | $ 301,487
Other due to Adviser |  | 1,867 | 3,187
Total due to Adviser |  | 358,738 | 304,674
Administration fee due to Administrator |  | 180,722 | 166,427
Total due to Administrator |  | 180,722 | 166,427
Total due to related parties | [1] | $ 539,460 | $ 471,101
[1] | Refer to Note 4, "Related-Party Transactions," for additional information.

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