Current report

Cover

v3.25.0.1
Cover
Mar. 10, 2025
Document Information [Line Items]  
Amendment Flag false
Entity Central Index Key 0001280784
Document Type 8-K
Document Period End Date Mar. 10, 2025
Entity Registrant Name Hercules Capital, Inc.
Entity Incorporation, State or Country Code MD
Securities Act File Number 814-00702
Entity Tax Identification Number 74-3113410
Entity Address, Address Line One 1 North B Street
Entity Address, Address Line Two Suite 2000
Entity Address, City or Town San Mateo
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94401
City Area Code 650
Local Phone Number 289-3060
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock, par value $0.001 per share [Member]  
Document Information [Line Items]  
Title of 12(b) Security Common Stock, par value $0.001 per share
Trading Symbol HTGC
Security Exchange Name NYSE
Deferrable Notes [Member]  
Document Information [Line Items]  
Title of 12(b) Security 6.25% Notes due 2033
Trading Symbol HCXY
Security Exchange Name NYSE