v3.25.2
Cover
Aug. 13, 2025
Document Type 8-K
Amendment Flag false
Document Period End Date Aug. 13, 2025
Entity File Number 814-01211
Entity Registrant Name Great Elm Capital Corp.
Entity Central Index Key 0001675033
Entity Tax Identification Number 81-2621577
Entity Incorporation, State or Country Code MD
Entity Address, Address Line One 3801 PGA Blvd.
Entity Address, Address Line Two Suite 603
Entity Address, City or Town Palm Beach Gardens
Entity Address, State or Province FL
Entity Address, Postal Zip Code 33410
City Area Code 617
Local Phone Number 375-3006
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock [Member]  
Title of 12(b) Security Common stock, $0.01 par value
Trading Symbol GECC
Security Exchange Name NASDAQ
Five Point Eight Seven Five Percent Notes Due Two Thousand Twenty Six [Member]  
Title of 12(b) Security 5.875% Notes due 2026
Trading Symbol GECCO
Security Exchange Name NASDAQ
Eight Point Seven Five Percent Notes Due Two Thousand Twenty Eight [Member]  
Title of 12(b) Security 8.75% Notes due 2028
Trading Symbol GECCZ
Security Exchange Name NASDAQ
Eight Point Five Zero Percent Notes Due Two Thousand Twenty Nine [Member]  
Title of 12(b) Security 8.50% Notes due 2029
Trading Symbol GECCI
Security Exchange Name NASDAQ
Eight Point One Two Five Percent Notes Due Two Thousand Twenty Nine [Member]  
Title of 12(b) Security 8.125% Notes due 2029
Trading Symbol GECCH
Security Exchange Name NASDAQ