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Related-Party Transactions - Summary of Management Fees, Incentive Fees and Associated Credits and Administration Fees (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Related Party Transactions [Abstract] |  |  |  |  |
Management fee | [1] | $ 523 | $ 385 | $ 1,446 | $ 1,158
Incentive fee | [1] | 261 | 22 | 688 | 181
Credits from voluntary, irrevocable waiver granted by Adviser’s board of directors | [1] | 54 | 0 | 54 | 0
Net fees due to our Adviser |  | 730 | 407 | 2,080 | 1,339
Administration fee | [1] | 211 | 184 | 656 | 575
Financing Fees to Gladstone Securities |  | $ 28 | $ 0 | $ 30 | $ 0
[1] | Refer to Note 6, “Related-Party Transactions,” for additional information.

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- Definition Administration fee. + References No definition available. + Details
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- Definition Credits to fees from adviser. + References No definition available. + Details
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- Definition Financing Fee + References No definition available. + Details
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Balance Type: | debit
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- Definition Related party transaction net incentive fees paid and credits received. + References No definition available. + Details
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- Definition Amount of expense for incentive rights held by the managing member or general partner, of limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
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- Definition Amount of expenses related to the managing member or general partner for management of the day-to-day business functions of the limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
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- References No definition available. + Details
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