| Cover Page | Apr. 26, 2021 |
| Cover [Abstract] | |
| Entity Central Index Key | 0001367859 |
| Amendment Flag | false |
| Document Type | 8-K |
| Document Period End Date | Apr. 26, 2021 |
| Entity Registrant Name | CITIZENS COMMUNITY BANCORP, INC. |
| Entity Incorporation, State or Country Code | MD |
| Entity File Number | 001-33003 |
| Entity Tax Identification Number | 20-5120010 |
| Entity Address, Address Line One | 2174 EastRidge Center |
| Entity Address, City or Town | Eau Claire |
| Entity Address, State or Province | WI |
| Entity Address, Postal Zip Code | 54701 |
| City Area Code | 715 |
| Local Phone Number | 836-9994 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $.01 par value per share |
| Trading Symbol | CZWI |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
