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

Quarterly report [Sections 13 or 15(d)]

Related Party Transactions - Narrative (Details)

Related Party Transactions - Narrative (Details) - Adviser Subsidiary - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Related Party Transaction [Line Items]
Amounts received by the Company from the Adviser Funds relating to assigned investments	$ 3.4	$ 2.8	$ 6.7	$ 5.7
Receivable from related party (current year approximately, prior year less than)	$ 1.2		$ 1.2		$ 0.1

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