Cover
Cover | Oct. 13, 2021 |
Cover [Abstract] | |
Document Type | 8-K |
Amendment Flag | false |
Document Period End Date | Oct. 13, 2021 |
Entity File Number | 001-36423 |
Entity Registrant Name | HENNESSY ADVISORS, INC. |
Entity Central Index Key | 0001145255 |
Entity Tax Identification Number | 68-0176227 |
Entity Incorporation, State or Country Code | CA |
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 |
Title of 12(b) Security | Common stock, no par value |
Trading Symbol | HNNA |
Security Exchange Name | NASDAQ |
Entity Emerging Growth Company | false |