Document and Entity Information
Document and Entity Information | Feb. 10, 2022 |
Document And Entity Information [Line Items] | |
Entity Registrant Name | HENNESSY ADVISORS INC |
Amendment Flag | false |
Entity Central Index Key | 0001145255 |
Document Type | 8-K |
Document Period End Date | Feb. 10, 2022 |
Entity Incorporation State Country Code | CA |
Entity File Number | 001-36423 |
Entity Tax Identification Number | 68-0176227 |
Entity Address, Address Line One | 7250 Redwood Blvd. |
Entity Address, Address Line Two | Suite 200 |
Entity Address, City or Town | Novato |
Entity Address, State or Province | CA |
Entity Address, Postal Zip Code | 94945 |
City Area Code | (415) |
Local Phone Number | 899-1555 |
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] | |
Document And Entity Information [Line Items] | |
Security 12b Title | Common stock, no par value |
Trading Symbol | HNNA |
Security Exchange Name | NASDAQ |
Deferrable Notes [Member] | |
Document And Entity Information [Line Items] | |
Security 12b Title | 4.875% Notes due 2026 |
Trading Symbol | HNNAZ |
Security Exchange Name | NASDAQ |