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Cover | May 21, 2020
--- | ---
Cover [Abstract] |
Document Type | 8-K
Amendment Flag | false
Document Period End Date | May 21, 2020
Entity File Number | 0-422
Entity Registrant Name | MIDDLESEX WATER COMPANY
Entity Central Index Key | 0000066004
Entity Tax Identification Number | 22-1114430
Entity Incorporation, State or Country Code | NJ
Entity Address, Address Line One | 485C ROUTE 1 SOUTH
Entity Address, Address Line Two | SUITE 400
Entity Address, City or Town | ISELIN
Entity Address, State or Province | NJ
Entity Address, Postal Zip Code | 08830
City Area Code | 732
Local Phone Number | 634-1500
Written Communications | false
Soliciting Material | false
Pre-commencement Tender Offer | false
Pre-commencement Issuer Tender Offer | false
Title of 12(b) Security | Common Stock
Trading Symbol | MSEX
Security Exchange Name | NASDAQ
Entity Emerging Growth Company | false

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