Document and Entity Information
Document and Entity Information | Aug. 03, 2021 |
Cover [Abstract] | |
Entity Registrant Name | UNITIL CORP |
Amendment Flag | false |
Entity Central Index Key | 0000755001 |
Document Type | 8-K |
Document Period End Date | Aug. 3, 2021 |
Entity Incorporation State Country Code | NH |
Entity File Number | 1-8858 |
Entity Tax Identification Number | 02-0381573 |
Entity Address, Address Line One | 6 Liberty Lane West |
Entity Address, City or Town | Hampton |
Entity Address, State or Province | NH |
Entity Address, Postal Zip Code | 03842-1720 |
City Area Code | (603) |
Local Phone Number | 772-0775 |
Written Communications | false |
Soliciting Material | false |
Pre Commencement Tender Offer | false |
Pre Commencement Issuer Tender Offer | false |
Security 12b Title | Common Stock, no par value |
Trading Symbol | UTL |
Security Exchange Name | NYSE |
Entity Emerging Growth Company | false |