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DIVIDENDS DECLARED PER SHARE | 6 Months Ended
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Jun. 30, 2018
DIVIDENDS DECLARED PER SHARE | NOTE 2 – DIVIDENDS DECLARED PER SHARE
Declaration Date |  | Date Paid (Payable) |  | Shareholder of Record Date |  | Dividend Amount
07/25/18 |  | 08/29/18 |  | 08/15/18 |  | $0.365
04/25/18 |  | 05/29/18 |  | 05/15/18 |  | $0.365
01/30/18 |  | 02/28/18 |  | 02/14/18 |  | $0.365
10/25/17 |  | 11/29/17 |  | 11/15/17 |  | $0.360
07/26/17 |  | 08/29/17 |  | 08/15/17 |  | $0.360
04/26/17 |  | 05/30/17 |  | 05/16/17 |  | $0.360
01/25/17 |  | 02/28/17 |  | 02/14/17 |  | $0.360

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- Definition Disclosure of Dividends Declared and Paid. + References No definition available. + Details
Name: | utl_DisclosureOfDividendsDeclaredAndPaidTextBlock
Namespace Prefix: | utl_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration