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Related-Party Transactions - Additional Information (Detail) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Feb. 20, 2020 | Dec. 31, 2022 USD ($) officer | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Related Party Transaction [Line Items] |  |  |  |
Number of executive officers that serve as directors | officer |  | 2 |  |
Hurdle rate, quarterly |  | 1.75% |  |
Hurdle rate, annual |  | 7.00% |  |
Pre-incentive Fee FFO |  | 100.00% |  |
Pre-Incentive Fee, exceeded |  | 2.1875% |  |
Pre-Incentive Fee, exceeded, annual |  | 8.75% |  |
Pre-incentive fee |  | 20.00% |  |
Cumulative realized capital gains |  | 15.00% |  |
Written notice |  | 120 days |  |
Multiplier |  | 300.00% |  |
Period prior to termination |  | 24 months |  |
Financing fee |  | $ 154 | $ 166 | $ 262
Dealer-manager fees |  | $ 13,471 | 4,961 | 4,711
Prior Advisory Agreement |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Management fee |  | 0.50% |  |
Base management fee, quarterly |  | 0.125% |  |
Current Advisory Agreement |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Management fee |  | 0.60% |  |
Base management fee, quarterly |  | 0.15% |  |
Gladstone Securities |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Percentage of financing fee |  | 0.14% |  |
Preferred Stock | Series B Preferred Stock |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Selling commission fee | 7.00% |  |  |
Dealer-manager fee | 3.00% |  |  |
Preferred Stock | Series B Preferred Stock | Gladstone Securities |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Dealer-manager fees |  |  | 2,500 |
Preferred Stock | Series C Preferred Stock |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Selling commission fee | 6.00% |  |  |
Dealer-manager fee | 3.00% |  |  |
Dealer-manager fees |  | $ 13,500 | $ 5,000 | $ 2,200
Preferred Stock | Series E Preferred Stock |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Selling commission fee | 7.00% |  |  |
Dealer-manager fee | 3.00% |  |  |
Gladstone Securities | Minimum | Gladstone Securities |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Percentage of financing fee |  | 0.50% |  |
Gladstone Securities | Maximum | Gladstone Securities |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Percentage of financing fee |  | 1.00% |  |

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- Definition Amount to be paid to adviser in percentage of pre incentive fee condition one. + References No definition available. + Details
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- Definition Amount to be paid to adviser in percentage of pre incentive fee condition two. + References No definition available. + Details
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- Definition Financing Fee + References No definition available. + Details
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