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DIVIDENDS DECLARED PER SHARE | 3 Months Ended
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Mar. 31, 2017
DIVIDENDS DECLARED PER SHARE | NOTE 2 – DIVIDENDS DECLARED PER SHARE
Declaration Date |  | Date Paid (Payable) |  | Shareholder of Record Date |  | Dividend Amount
04/26/17 |  | 05/30/17 |  | 05/16/17 |  | $ 0.360
01/25/17 |  | 02/28/17 |  | 02/14/17 |  | $ 0.360
10/19/16 |  | 11/28/16 |  | 11/14/16 |  | $ 0.355
07/20/16 |  | 08/26/16 |  | 08/12/16 |  | $ 0.355
04/20/16 |  | 05/27/16 |  | 05/13/16 |  | $ 0.355
01/27/16 |  | 02/26/16 |  | 02/12/16 |  | $ 0.355

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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