| Component: (Network and Table) | |
|---|---|
| Network | 00000042 - Disclosure - Capitalization (Schedule of Maturities of Long-term Debt) (Details) (http://middlesexwater.com/role/Disclosure-CapitalizationScheduleofMaturitiesofLong-termDebtDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0000066004 (http://www.sec.gov/CIK) |
| CAPITALIZATION: | Period [Axis] |
|---|---|
2016-12-31 | |
CAPITALIZATION: | |
2017 | |
2018 | |
2019 | |
2020 | |
2021 |