Hercules Capital, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Investment Company, Accounting And Reporting Under Topic 946 [ true false]	true
Cash, Held in Foreign Currency, Acquisition Cost	$ 1,168	$ 93
Other comprehensive income	0	0	$ 0
Cash Held In Foreign Currency	$ 1,178	$ 95
Total asset investment, Percentage	97.90%

- Definition

Amount after tax and reclassification adjustments of other comprehensive income (loss).

+ References

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+ Details