Hercules Capital, Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Related Party Transactions - Schedule of Related Party Transactions (Details)

Related Party Transactions - Schedule of Related Party Transactions (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Related Party Transaction [Line Items]
Assets sold to the Adviser Funds	$ 20.0	$ 0.0
Adviser Funds
Related Party Transaction [Line Items]
Investment commitments assigned to or directly committed by the Adviser Funds	660.9	422.1
Investment fundings assigned to, directly originated or funded by the Adviser Funds	408.1	277.1
Amounts received by the Company from the Adviser Funds relating to assigned investments	$ 0.0	$ 6.0

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details