XML 194 R43.htm IDEA: XBRL DOCUMENT
v3.25.0.1

RELATED PARTY TRANSACTIONS - Schedule of Related Party Transactions (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023
Related Party Transactions [Abstract] |  |  |  |  |
Average total assets subject to base management fee |  | $ 974,400 | $ 920,400 | $ 929,133 | $ 858,267
Multiplied by prorated annual base management fee of 2.0% |  | 0.50% | 0.50% | 1.50% | 1.50%
Base management fee | [1] | $ 4,872 | $ 4,602 | $ 13,937 | $ 12,874
Credits to fees from adviser - other |  | (2,851) | (1,793) | (4,147) | (5,117)
Net base management fee |  | 2,021 | 2,809 | 9,790 | 7,757
Loan servicing fee | [1] | 2,405 | 2,332 | 6,821 | 6,829
Credits to base management fee – loan servicing fee |  | (2,405) | (2,332) | (6,821) | (6,829)
Net loan servicing fee |  | 0 | 0 | 0 | 0
Incentive fee – income-based |  | 1,887 | 2,282 | 2,481 | 6,142
Incentive fee – capital gains-based |  | 7,466 | (615) | 5,316 | 9,259
Total incentive fee |  | 9,353 | 1,667 | 7,797 | 15,401
Credits to fees from adviser - other |  | 0 | 0 | 0 | 0
Net total incentive fee | [1] | $ 9,353 | $ 1,667 | $ 7,797 | $ 15,401
Base management fee (as a percent) |  | 2.00% | 2.00% | 2.00% | 2.00%
[1] | Refer to Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements for additional information.

X
- Definition Incentive Fee + References No definition available. + Details
Name: | gain_IncentiveFee
Namespace Prefix: | gain_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Incentive Fee, Capital Gains-Based + References No definition available. + Details
Name: | gain_IncentiveFeeCapitalGainsBased
Namespace Prefix: | gain_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Incentive Fee, Income-Based + References No definition available. + Details
Name: | gain_IncentiveFeeIncomeBased
Namespace Prefix: | gain_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Investment Company, Credits To Base Management Fee, Loan Servicing Fee + References No definition available. + Details
Name: | gain_InvestmentCompanyCreditsToBaseManagementFeeLoanServicingFee
Namespace Prefix: | gain_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Investment Company, Credits To Fees From Adviser, Other + References No definition available. + Details
Name: | gain_InvestmentCompanyCreditsToFeesFromAdviserOther
Namespace Prefix: | gain_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Investment Company, Credits To Incentive Fees From Adviser, Other + References No definition available. + Details
Name: | gain_InvestmentCompanyCreditsToIncentiveFeesFromAdviserOther
Namespace Prefix: | gain_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net Base Management Fee + References No definition available. + Details
Name: | gain_NetBaseManagementFee
Namespace Prefix: | gain_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net Loan Servicing Fee + References No definition available. + Details
Name: | gain_NetLoanServicingFee
Namespace Prefix: | gain_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net Total Incentive Fee + References No definition available. + Details
Name: | gain_NetTotalIncentiveFee
Namespace Prefix: | gain_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The average carrying amount of assets managed during the period by the investment advisor on behalf of investors. + References No definition available. + Details
Name: | us-gaap_AssetsUnderManagementAverageBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Expenses paid for obtaining loans which includes expenses such as application and origination fees. + References No definition available. + Details
Name: | us-gaap_LoanProcessingFee
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Base rate for management and service fees under arrangement to manage operations, including, but not limited to, investment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 + Details
Name: | us-gaap_ManagementAndServiceFeesBaseRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rate for management and service fees under arrangement to manage operations, including, but not limited to, investment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 + Details
Name: | us-gaap_ManagementAndServiceFeesRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expense for investment management fee, including, but not limited to, expense in connection with research, selection, supervision, and custody of investment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-10 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479105/946-220-45-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483326/850-10-50-1 + Details
Name: | us-gaap_ManagementFeeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration