XML 56 R2.htm IDEA: XBRL DOCUMENT
v3.26.1

Pay vs Performance Disclosure - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Pay vs Performance Disclosure |  |  |  |  |
Pay vs Performance Disclosure, Table | Pay Versus Performance The table below shows the information specified in Item 402(v) of Regulation S-K concerning the compensation of the CEO and the average compensation of the other Named Executive Officers of the Company compared to financial performance for each of fiscal years 2021, 2022, 2023, 2024, and 2025.
PAY VERSUS PERFORMANCE
Year |  | Summary Compensation Table Total for CEO (1) |  | Compensation Actually Paid to CEO (2) |  | Average Summary Compensation Table Total for Non-CEO NEOs (3) |  | Average Compensation Actually Paid to Non-CEO NEOs (2)(3) |  | Value of Initial Fixed $100 Investment Based On: |  | Net Income (in millions) |  | Company Selected Measure: Earnings Per Share (“EPS”)
| Total Shareholder Return (“TSR”) (4) |  | Peer Group Total Shareholder Return (4)
(a) |  | (b) |  | (c) |  | (d) |  | (e) |  | (f) |  | (g) |  | (h) |  | (i)
2025 |  | $3,189,116 |  | $2,295,997 |  |  |  | $1,065,007 |  |  |  |  | $872,495 |  |  |  |  | $128.54 |  |  |  |  | $159.06 |  |  |  |  | $50.2 |  |  |  |  | $2.97 | (5)
2024 |  | $2,572,032 |  | $2,398,645 |  |  |  | $ 877,120 |  |  |  |  | $829,811 |  |  |  |  | $102.83 |  |  |  |  | $137.73 |  |  |  |  | $47.1 |  |  |  |  | $2.93 | (6)
2023 |  | $2,625,890 |  | $2,342,445 |  |  |  | $ 856,767 |  |  |  |  | $651,099 |  |  |  |  | $ 96.57 |  |  |  |  | $111.59 |  |  |  |  | $45.2 |  |  |  |  | $2.82 |
2022 |  | $1,488,255 |  | $1,658,803 |  |  |  | $ 531,450 |  |  |  |  | $556,598 |  |  |  |  | $ 91.49 |  |  |  |  | $120.09 |  |  |  |  | $41.4 |  |  |  |  | $2.59 |
2021 |  | $2,426,750 |  | $2,224,626 |  |  |  | $ 578,575 |  |  |  |  | $565,779 |  |  |  |  | $ 79.47 |  |  |  |  | $118.24 |  |  |  |  | $36.1 |  |  |  |  | $2.35 |
NOTES:
| (1) | Mr. Meissner was the CEO for each of 2021, 2022, 2023, 2024, and 2025.
| (2) | SEC rules require certain adjustments must be made to the Summary Compensation Table totals to determine “compensation actually paid” as reported in the Pay versus Performance Table. Compensation actually paid (“CAP”) does not necessarily represent cash and/or equity value transferred to the applicable Named Executive Officer without restriction, but rather is a value calculated under applicable SEC rules. In general, CAP is calculated as Summary Compensation Table total compensation adjusted to include the fair market value of equity awards as of December 31 of the applicable year or, if earlier, the vesting date (rather than the grant date), as well as an adjustment subtracting the change in pension value as of December 31 and adding the actuarially determined service cost for services rendered by the Named Executive Officer, if applicable, during the covered fiscal year. The table below details these adjustments.
COMPENSATION ACTUALLY PAID
Year |  | Executive(s) |  | Summary Compensation Table: Base Salary |  | Adjusted Equity Awards |  | Summary Compensation Table: Non-Equity Compensation |  | Change in Pension Value or Service Cost (7) |  | Summary Compensation Table: All Other Compensation |  | Total Compensation Actually Paid
(a) |  | (b) |  | (c) |  | (d) |  | (e) |  | (f) |  | (g) |  | (h)
2025 |  | CEO |  | $744,066 |  |  |  | $531,278 |  |  |  | $ | 662,591 |  |  |  | $ | 187,858 |  |  |  | $ | 170,204 |  |  |  | $ | 2,295,997 |
2025 |  | Non-CEO NEOs |  | $360,555 |  |  |  | $144,821 |  |  |  | $ | 209,982 |  |  |  | $ | 15,174 |  |  |  | $ | 141,965 |  |  |  | $ | 872,495 |
2024 |  | CEO |  | $712,025 |  |  |  | $759,041 |  |  |  | $ | 518,354 |  |  |  | $ | 250,735 |  |  |  | $ | 158,490 |  |  |  | $ | 2,398,645 |
2024 |  | Non-CEO NEOs |  | $342,381 |  |  |  | $198,973 |  |  |  | $ | 163,726 |  |  |  | $ | 15,142 |  |  |  | $ | 109,591 |  |  |  | $ | 829,811 |
2023 |  | CEO |  | $678,119 |  |  |  | $739,078 |  |  |  | $ | 515,709 |  |  |  | $ | 251,965 |  |  |  | $ | 157,574 |  |  |  | $ | 2,342,445 |
2023 |  | Non-CEO NEOs |  | $274,566 |  |  |  | $119,704 |  |  |  | $ | 134,469 |  |  |  | $ | 27,046 |  |  |  | $ | 95,314 |  |  |  | $ | 651,099 |
2022 |  | CEO |  | $645,214 |  |  |  | $170,548 |  |  |  | $ | 521,564 |  |  |  |  | — |  |  |  | $ | 321,477 |  |  |  | $ | 1,658,803 |
2022 |  | Non-CEO NEOs |  | $300,546 |  |  |  | $ 24,995 |  |  |  | $ | 142,078 |  |  |  |  | — |  |  |  | $ | 88,979 |  |  |  | $ | 556,598 |
2021 |  | CEO |  | $620,398 |  |  |  | $652,071 |  |  |  | $ | 466,162 |  |  |  | $ | 342,315 |  |  |  | $ | 143,680 |  |  |  | $ | 2,224,626 |
2021 |  | Non-CEO NEOs |  | $261,300 |  |  |  | $ 88,533 |  |  |  | $ | 117,920 |  |  |  | $ | 26,413 |  |  |  | $ | 71,614 |  |  |  | $ | 565,779 |
NOTES, continued:
| (3) | In 2024 and 2025, the other Named Executive Officers were Mr. Hevert, Mr. Hurstak, Mr. Eisfeller, and Mr. LeBlanc. In 2023, the other Named Executive Officers were Mr. Hevert, Mr. Hurstak, Mr. Eisfeller, Mr. LeBlanc, and Todd R. Black. Mr. Black retired from the Company on May 1, 2023. In 2022, the other Named Executive Officers were Mr. Hevert, Mr. Black, Mr. Eisfeller and Mr. LeBlanc. In 2021, the other Named Executive Officers were Mr. Hevert, Mr. Black, Mr. Eisfeller, Mr. LeBlanc, and Laurence M. Brock. Mr. Brock retired from the Company in July 2021.
| (4) | TSR is determined based on the value of an initial fixed investment of $100 at December 31, 2020. The TSR peer group consists of the S&P 500 Utilities Index. Source of data: S&P Dow Jones Indices LLC.
| (5) | For the purpose of calculating the 2025 performance of the “EPS” metric in the Management Incentive Plan, the Committee made the decision in January 2025, when the metrics were established, to use the reported Adjusted non-GAAP EPS for 2025 15 to allow for the transaction costs associated with the acquisitions of Bangor Natural Gas Company and Maine Natural Gas Corporation, both of which were completed in 2025, and the pending acquisition of Aquarion Water Company of Massachusetts, Inc., Aquarion Water Company of New Hampshire, Inc., and Abenaki Water Co., Inc.
| (6) | Reported EPS in 2024 was $2.93. The Compensation Committee made a discretionary $0.04 adjustment to account for the financial impact of the transaction costs incurred in 2024 associated with then-pending acquisition of Bangor Natural Gas Company.
| (7) | All values shown reflect the pension service cost in the applicable year.
Company Selected Measure Name | EPS |  |  |  |
Named Executive Officers, Footnote | In 2024 and 2025, the other Named Executive Officers were Mr. Hevert, Mr. Hurstak, Mr. Eisfeller, and Mr. LeBlanc. | In 2024 and 2025, the other Named Executive Officers were Mr. Hevert, Mr. Hurstak, Mr. Eisfeller, and Mr. LeBlanc. | In 2023, the other Named Executive Officers were Mr. Hevert, Mr. Hurstak, Mr. Eisfeller, Mr. LeBlanc, and Todd R. Black. Mr. Black retired from the Company on May 1, 2023. | In 2022, the other Named Executive Officers were Mr. Hevert, Mr. Black, Mr. Eisfeller and Mr. LeBlanc. | In 2021, the other Named Executive Officers were Mr. Hevert, Mr. Black, Mr. Eisfeller, Mr. LeBlanc, and Laurence M. Brock. Mr. Brock retired from the Company in July 2021.
Peer Group Issuers, Footnote | TSR is determined based on the value of an initial fixed investment of $100 at December 31, 2020. The TSR peer group consists of the S&P 500 Utilities Index. Source of data: S&P Dow Jones Indices LLC. |  |  |  |
PEO Total Compensation Amount | $ 3,189,116 | $ 2,572,032 | $ 2,625,890 | $ 1,488,255 | $ 2,426,750
PEO Actually Paid Compensation Amount | $ 2,295,997 | 2,398,645 | 2,342,445 | 1,658,803 | 2,224,626
Adjustment To PEO Compensation, Footnote |
| (2) | SEC rules require certain adjustments must be made to the Summary Compensation Table totals to determine “compensation actually paid” as reported in the Pay versus Performance Table. Compensation actually paid (“CAP”) does not necessarily represent cash and/or equity value transferred to the applicable Named Executive Officer without restriction, but rather is a value calculated under applicable SEC rules. In general, CAP is calculated as Summary Compensation Table total compensation adjusted to include the fair market value of equity awards as of December 31 of the applicable year or, if earlier, the vesting date (rather than the grant date), as well as an adjustment subtracting the change in pension value as of December 31 and adding the actuarially determined service cost for services rendered by the Named Executive Officer, if applicable, during the covered fiscal year. The table below details these adjustments.
COMPENSATION ACTUALLY PAID
Year |  | Executive(s) |  | Summary Compensation Table: Base Salary |  | Adjusted Equity Awards |  | Summary Compensation Table: Non-Equity Compensation |  | Change in Pension Value or Service Cost (7) |  | Summary Compensation Table: All Other Compensation |  | Total Compensation Actually Paid
(a) |  | (b) |  | (c) |  | (d) |  | (e) |  | (f) |  | (g) |  | (h)
2025 |  | CEO |  | $744,066 |  |  |  | $531,278 |  |  |  | $ | 662,591 |  |  |  | $ | 187,858 |  |  |  | $ | 170,204 |  |  |  | $ | 2,295,997 |
2025 |  | Non-CEO NEOs |  | $360,555 |  |  |  | $144,821 |  |  |  | $ | 209,982 |  |  |  | $ | 15,174 |  |  |  | $ | 141,965 |  |  |  | $ | 872,495 |
2024 |  | CEO |  | $712,025 |  |  |  | $759,041 |  |  |  | $ | 518,354 |  |  |  | $ | 250,735 |  |  |  | $ | 158,490 |  |  |  | $ | 2,398,645 |
2024 |  | Non-CEO NEOs |  | $342,381 |  |  |  | $198,973 |  |  |  | $ | 163,726 |  |  |  | $ | 15,142 |  |  |  | $ | 109,591 |  |  |  | $ | 829,811 |
2023 |  | CEO |  | $678,119 |  |  |  | $739,078 |  |  |  | $ | 515,709 |  |  |  | $ | 251,965 |  |  |  | $ | 157,574 |  |  |  | $ | 2,342,445 |
2023 |  | Non-CEO NEOs |  | $274,566 |  |  |  | $119,704 |  |  |  | $ | 134,469 |  |  |  | $ | 27,046 |  |  |  | $ | 95,314 |  |  |  | $ | 651,099 |
2022 |  | CEO |  | $645,214 |  |  |  | $170,548 |  |  |  | $ | 521,564 |  |  |  |  | — |  |  |  | $ | 321,477 |  |  |  | $ | 1,658,803 |
2022 |  | Non-CEO NEOs |  | $300,546 |  |  |  | $ 24,995 |  |  |  | $ | 142,078 |  |  |  |  | — |  |  |  | $ | 88,979 |  |  |  | $ | 556,598 |
2021 |  | CEO |  | $620,398 |  |  |  | $652,071 |  |  |  | $ | 466,162 |  |  |  | $ | 342,315 |  |  |  | $ | 143,680 |  |  |  | $ | 2,224,626 |
2021 |  | Non-CEO NEOs |  | $261,300 |  |  |  | $ 88,533 |  |  |  | $ | 117,920 |  |  |  | $ | 26,413 |  |  |  | $ | 71,614 |  |  |  | $ | 565,779 |
Non-PEO NEO Average Total Compensation Amount | $ 1,065,007 | 877,120 | 856,767 | 531,450 | 578,575
Non-PEO NEO Average Compensation Actually Paid Amount | $ 872,495 | 829,811 | 651,099 | 556,598 | 565,779
Adjustment to Non-PEO NEO Compensation Footnote |
| (2) | SEC rules require certain adjustments must be made to the Summary Compensation Table totals to determine “compensation actually paid” as reported in the Pay versus Performance Table. Compensation actually paid (“CAP”) does not necessarily represent cash and/or equity value transferred to the applicable Named Executive Officer without restriction, but rather is a value calculated under applicable SEC rules. In general, CAP is calculated as Summary Compensation Table total compensation adjusted to include the fair market value of equity awards as of December 31 of the applicable year or, if earlier, the vesting date (rather than the grant date), as well as an adjustment subtracting the change in pension value as of December 31 and adding the actuarially determined service cost for services rendered by the Named Executive Officer, if applicable, during the covered fiscal year. The table below details these adjustments.
COMPENSATION ACTUALLY PAID
Year |  | Executive(s) |  | Summary Compensation Table: Base Salary |  | Adjusted Equity Awards |  | Summary Compensation Table: Non-Equity Compensation |  | Change in Pension Value or Service Cost (7) |  | Summary Compensation Table: All Other Compensation |  | Total Compensation Actually Paid
(a) |  | (b) |  | (c) |  | (d) |  | (e) |  | (f) |  | (g) |  | (h)
2025 |  | CEO |  | $744,066 |  |  |  | $531,278 |  |  |  | $ | 662,591 |  |  |  | $ | 187,858 |  |  |  | $ | 170,204 |  |  |  | $ | 2,295,997 |
2025 |  | Non-CEO NEOs |  | $360,555 |  |  |  | $144,821 |  |  |  | $ | 209,982 |  |  |  | $ | 15,174 |  |  |  | $ | 141,965 |  |  |  | $ | 872,495 |
2024 |  | CEO |  | $712,025 |  |  |  | $759,041 |  |  |  | $ | 518,354 |  |  |  | $ | 250,735 |  |  |  | $ | 158,490 |  |  |  | $ | 2,398,645 |
2024 |  | Non-CEO NEOs |  | $342,381 |  |  |  | $198,973 |  |  |  | $ | 163,726 |  |  |  | $ | 15,142 |  |  |  | $ | 109,591 |  |  |  | $ | 829,811 |
2023 |  | CEO |  | $678,119 |  |  |  | $739,078 |  |  |  | $ | 515,709 |  |  |  | $ | 251,965 |  |  |  | $ | 157,574 |  |  |  | $ | 2,342,445 |
2023 |  | Non-CEO NEOs |  | $274,566 |  |  |  | $119,704 |  |  |  | $ | 134,469 |  |  |  | $ | 27,046 |  |  |  | $ | 95,314 |  |  |  | $ | 651,099 |
2022 |  | CEO |  | $645,214 |  |  |  | $170,548 |  |  |  | $ | 521,564 |  |  |  |  | — |  |  |  | $ | 321,477 |  |  |  | $ | 1,658,803 |
2022 |  | Non-CEO NEOs |  | $300,546 |  |  |  | $ 24,995 |  |  |  | $ | 142,078 |  |  |  |  | — |  |  |  | $ | 88,979 |  |  |  | $ | 556,598 |
2021 |  | CEO |  | $620,398 |  |  |  | $652,071 |  |  |  | $ | 466,162 |  |  |  | $ | 342,315 |  |  |  | $ | 143,680 |  |  |  | $ | 2,224,626 |
2021 |  | Non-CEO NEOs |  | $261,300 |  |  |  | $ 88,533 |  |  |  | $ | 117,920 |  |  |  | $ | 26,413 |  |  |  | $ | 71,614 |  |  |  | $ | 565,779 |
Tabular List, Table |
Most Important Performance Measures |
Cash and Equity: 2021 |
Financial |  | Earnings Per Share |  |  | 40 | %
|  | O&M Cost Per Customer |  |  | 30 | %
Safety & Reliability |  | Electric System Reliability |  |  | 10 | %
|  | Gas Emergency Response Time |  |  | 10 | %
Customer Engagement |  | Customer Satisfaction |  |  | 10 | %
Cash: 2022-2025 |
Financial |  | Earnings Per Share |  |  | 40 | %
|  | O&M Cost Per Customer |  |  | 30 | %
Safety & Reliability |  | Electric System Reliability |  |  | 10 | %
|  | Gas Emergency Response Time |  |  | 10 | %
Customer Engagement |  | Customer Satisfaction |  |  | 10 | %
Equity: 2023-2025 |
Financial |  | Three-Year Average Return on Equity |  |  | 50 | %
|  | Three-Year Average Growth in Book Value Per Share |  |  | 50 | %
Total Shareholder Return Amount | $ 128.54 | 102.83 | 96.57 | 91.49 | 79.47
Peer Group Total Shareholder Return Amount | 159.06 | 137.73 | 111.59 | 120.09 | 118.24
Net Income (Loss) | $ 50,200,000 | $ 47,100,000 | $ 45,200,000 | $ 41,400,000 | $ 36,100,000
Company Selected Measure Amount | 2.97 | 2.93 | 2.82 | 2.59 | 2.35
PEO Name | Mr. Meissner |  |  |  |
Measure:: 1 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name |  |  | Financial | Financial | Financial
Measure:: 2 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name |  |  |  | Safety & Reliability | Safety & Reliability
Measure:: 3 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name |  |  |  | Customer Engagement | Customer Engagement
PEO | Base Salary [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | $ 744,066 | $ 712,025 | $ 678,119 | $ 645,214 | $ 620,398
PEO | Adjusted Equity Awards [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 531,278 | 759,041 | 739,078 | 170,548 | 652,071
PEO | Non Equity Compensation [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 662,591 | 518,354 | 515,709 | 521,564 | 466,162
PEO | Pension Value Or Service Cost [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 187,858 | 250,735 | 251,965 |  | 342,315
PEO | All Other Compensation [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 170,204 | 158,490 | 157,574 | 321,477 | 143,680
Non-PEO NEO | Base Salary [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 360,555 | 342,381 | 274,566 | 300,546 | 261,300
Non-PEO NEO | Adjusted Equity Awards [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 144,821 | 198,973 | 119,704 | 24,995 | 88,533
Non-PEO NEO | Non Equity Compensation [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 209,982 | 163,726 | 134,469 | 142,078 | 117,920
Non-PEO NEO | Pension Value Or Service Cost [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 15,174 | 15,142 | 27,046 |  | 26,413
Non-PEO NEO | All Other Compensation [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | $ 141,965 | $ 109,591 | $ 95,314 | $ 88,979 | $ 71,614

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToNonPeoNeoCompFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToPeoCompFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_CoSelectedMeasureAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_CoSelectedMeasureName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_MeasureName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_NamedExecutiveOfficersFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iii + Details
Name: | ecd_NonPeoNeoAvgCompActuallyPaidAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph ii + Details
Name: | ecd_NonPeoNeoAvgTotalCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_PeerGroupIssuersFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_PeerGroupTotalShareholderRtnAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iii + Details
Name: | ecd_PeoActuallyPaidCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_PeoName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph ii + Details
Name: | ecd_PeoTotalCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 1 + Details
Name: | ecd_PvpTable
Namespace Prefix: | ecd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 1 + Details
Name: | ecd_PvpTableTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 6 + Details
Name: | ecd_TabularListTableTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_TotalShareholderRtnAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-10 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476153/220-40-55-4 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 21 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476153/220-40-55-21 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476153/220-40-55-14 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(k)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-28 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-4 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479857/480-10-S50-3 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479887/480-10-S45-3 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3A -Subparagraph (24)(d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480244/480-10-S99-3A Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 105 -SubTopic 10 -Name Accounting Standards Codification -Section 65 -Paragraph 9 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479343/105-10-65-9 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 65 -Paragraph 17 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480336/718-10-65-17 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-6 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-9 Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 60 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476176/805-60-65-1 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478666/740-323-65-2 Reference 19: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482765/220-10-50-6 Reference 23: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-3 Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-1 Reference 25: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480175/815-40-65-1 Reference 26: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-8 Reference 27: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-11 Reference 28: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-11 Reference 29: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section 45 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479105/946-220-45-7 Reference 30: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 31: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(9)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 32: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(1)(d)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3 Reference 33: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 34: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 35: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 36: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 37: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 38: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 39: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 40: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 41: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 42: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 43: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 60B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482689/260-10-45-60B Reference 44: http://www.xbrl.org/2003/role/disclosureRef -Topic 205 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483499/205-20-50-7 Reference 45: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 46: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-1A Reference 47: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-1B Reference 48: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 65 -Paragraph 4 -Subparagraph (f)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481538/470-20-65-4 Reference 49: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 + Details
Name: | us-gaap_NetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ecd_MeasureAxis=1
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_MeasureAxis=2
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_MeasureAxis=3
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_ExecutiveCategoryAxis=ecd_PeoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=utl_BaseSalaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=utl_AdjustedEquityAwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=utl_NonEquityCompensationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=utl_PensionValueOrServiceCostMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=utl_AllOtherCompensationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_ExecutiveCategoryAxis=ecd_NonPeoNeoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |