XML 102 R15.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Summary of Significant Accounting Policies (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2013
Regulatory Assets |
|  | June 30, |  |  | December 31, |
Regulatory Assets consist of the following (millions) |  | 2013 |  |  | 2012 |  |  | 2012 |
Energy Supply & Other Regulatory Tracker Mechanisms |  | $ | 19.3 |  |  | $ | 30.4 |  |  | $ | 41.0 |
Deferred Restructuring Costs |  |  | 14.5 |  |  |  | 21.3 |  |  |  | 20.1 |
Retirement Benefit Obligations |  |  | 62.5 |  |  |  | 55.1 |  |  |  | 62.5 |
Income Taxes |  |  | 9.5 |  |  |  | 10.8 |  |  |  | 10.2 |
Environmental Obligations |  |  | 16.7 |  |  |  | 16.9 |  |  |  | 16.8 |
Deferred Storm Charges |  |  | 28.1 |  |  |  | 26.2 |  |  |  | 27.8 |
Other |  |  | 6.9 |  |  |  | 9.8 |  |  |  | 8.1 |
Total Regulatory Assets |  | $ | 157.5 |  |  | $ | 170.5 |  |  | $ | 186.5 |
Less: Current Portion of Regulatory Assets(1) |  |  | 31.6 |  |  |  | 35.2 |  |  |  | 51.9 |
Regulatory Assets – noncurrent |  | $ | 125.9 |  |  | $ | 135.3 |  |  | $ | 134.6 |
(1) | Reflects amounts included in Accrued Revenue, discussed below, on the Company’s unaudited Consolidated Balance Sheets.
Regulatory Liabilities |
|  | June 30, |  |  | December 31, |
Regulatory Liabilities consist of the following (millions) |  | 2013 |  |  | 2012 |  |  | 2012 |
Regulatory Tracker Mechanisms |  | $ | 13.3 |  |  | $ | 8.0 |  |  | $ | 6.8 |
Total Regulatory Liabilities |  | $ | 13.3 |  |  | $ | 8.0 |  |  | $ | 6.8 |
Components of Accrued Revenue | The following table shows the components of Accrued Revenue as of June 30, 2013, June 30, 2012 and December 31, 2012.
|  | June 30, |  |  | December 31, |
Accrued Revenue ($millions) |  | 2013 |  |  | 2012 |  |  | 2012 |
Regulatory Assets – Current |  | $ | 31.6 |  |  | $ | 35.2 |  |  | $ | 51.9 |
Unbilled Revenues |  |  | 6.7 |  |  |  | 6.3 |  |  |  | 11.5 |
Total Accrued Revenue |  | $ | 38.3 |  |  | $ | 41.5 |  |  | $ | 63.4 |
Components of Gas Inventory | The following table shows the components of Gas Inventory as of June 30, 2013, June 30, 2012 and December 31, 2012.
|  | June 30, |  |  | December 31, |
Gas Inventory ($millions) |  | 2013 |  |  | 2012 |  |  | 2012 |
Natural Gas |  | $ | 0.4 |  |  | $ | 0.1 |  |  | $ | 0.6 |
Propane |  |  | 0.3 |  |  |  | 0.4 |  |  |  | 0.4 |
Liquefied Natural Gas & Other |  |  | 0.1 |  |  |  | 0.1 |  |  |  | 0.1 |
Total Gas Inventory |  | $ | 0.8 |  |  | $ | 0.6 |  |  | $ | 1.1 |
Components of Exchange Gas Receivable | The following table shows the components of Exchange Gas Receivable as of June 30, 2013, June 30, 2012 and December 31, 2012.
|  | June 30, |  |  | December 31, |
Exchange Gas Receivable ($millions) |  | 2013 |  |  | 2012 |  |  | 2012 |
Northern Utilities |  | $ | 7.0 |  |  | $ | 8.0 |  |  | $ | 8.7 |
Fitchburg |  |  | 0.6 |  |  |  | 0.5 |  |  |  | 0.7 |
Total Exchange Gas Receivable |  | $ | 7.6 |  |  | $ | 8.5 |  |  | $ | 9.4 |
Components of Energy Supply Obligations |
|  | June 30, |  |  | December 31, |
Energy Supply Obligations ($millions) |  | 2013 |  |  | 2012 |  |  | 2012 |
Current: |  |  |  |  |  |  |  |  |  |  |  |
Exchange Gas Obligation |  | $ | 7.0 |  |  | $ | 8.0 |  |  | $ | 8.7 |
Power Supply Contract Divestitures |  |  | 0.9 |  |  |  | 4.7 |  |  |  | 0.9 |
Renewable Energy Portfolio Standards |  |  | 1.9 |  |  |  | 4.5 |  |  |  | 4.2 |
Total Energy Supply Obligations – Current |  | $ | 9.8 |  |  | $ | 17.2 |  |  | $ | 13.8 |
Long-Term: |  |  |  |  |  |  |  |  |  |  |  |
Power Supply Contract Divestitures |  | $ | 2.9 |  |  | $ | 3.8 |  |  | $ | 3.3 |
Total Energy Supply Obligations |  | $ | 12.7 |  |  | $ | 21.0 |  |  | $ | 17.1 |
Fair Value Amount of Derivative Liabilities Offset in Regulatory Assets |
Fair Value Amount of Derivative Liabilities (millions) Offset in Regulatory Assets, as of: |
|  |  |  | Fair Value |
Description |  | Balance Sheet Location |  | June 30, 2013 |  |  | June 30, 2012 |  |  | December 31, 2012 |
Derivative Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Natural Gas Futures Contracts |  | Other Current Liabilities |  | $ | 0.3 |  |  | $ | 1.5 |  |  | $ | 0.7 |
Natural Gas Futures Contracts |  | Other Noncurrent Liabilities |  |  | 0.1 |  |  |  | — |  |  |  | — |
Total Derivative Liabilities |  |  |  | $ | 0.4 |  |  | $ | 1.5 |  |  | $ | 0.7 |
Regulatory Assets (Liabilities) and Reclassification from Regulatory Asset (Liabilities) into Purchased Gas |
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
Amount of (Gain) / Loss Recognized in Regulatory Assets for Derivatives: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Natural Gas Futures Contracts |  | $ | 0.9 |  |  | $ | 0.1 |  |  | $ | 0.6 |  |  | $ | 1.4 |
Amount of Loss Reclassified into unaudited Consolidated Statements of Earnings(1): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased Gas |  | $ | — |  |  | $ | 0.6 |  |  | $ | 0.9 |  |  | $ | 2.2 |
(1) | These amounts are offset in the unaudited Consolidated Statements of Earnings with Accrued Revenue and therefore there is no effect on earnings.
Allowance for Doubtful Accounts Included in Accounts Receivable, Net | The Allowance for Doubtful Accounts as of June 30, 2013, June 30, 2012 and December 31, 2012, which are included in Accounts Receivable, net on the accompanying unaudited Consolidated Balance Sheets, were as follows:
|  | June 30, |  |  | December 31, |
|  | 2013 |  |  | 2012 |  |  | 2012 |
Allowance for Doubtful Accounts |  | $ | 2.4 |  |  | $ | 2.9 |  |  | $ | 1.9 |

X
- Definition Tabular disclosure of assets that are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 715 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501251&loc=d3e52485-110419 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44264-110382 + Details
Name: | us-gaap_ScheduleOfRegulatoryAssetsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of regulatory liabilities. Detailed information about liabilities that result from rate actions of a regulator. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 405 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394 + Details
Name: | us-gaap_ScheduleOfRegulatoryLiabilitiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of all information related to inventories for utilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-05.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_ScheduleOfUtilityInventoryTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of arrangements in which the entity has committed resources to supply goods or services to a customer. May include identification of the goods or services to be furnished, identity of the purchasing party, pricing, effects on pricing for failing to deliver the [minimum] quantities required to be furnished, cancellation rights, and termination provisions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 25 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 7 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 17 -Article 9 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph 25 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_SupplyCommitmentTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Allowance for Doubtful Accounts, Table + References No definition available. + Details
Name: | utl_AllowanceForDoubtfulAccountsTableTextBlock
Namespace Prefix: | utl_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Derivative Instruments Gain (Loss) by Hedging Relationship by Income Statement Location + References No definition available. + Details
Name: | utl_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationTextBlock
Namespace Prefix: | utl_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule Of Other Accounts Receivable Table + References No definition available. + Details
Name: | utl_ScheduleOfOtherAccountsReceivableTableTextBlock
Namespace Prefix: | utl_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of Regulatory Assets and Liabilities [Table Text Block] + References No definition available. + Details
Name: | utl_ScheduleOfRegulatoryAssetsAndLiabilitiesTableTextBlock
Namespace Prefix: | utl_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Unbilled Accounts Receivable Table + References No definition available. + Details
Name: | utl_UnbilledAccountsReceivableTableTextBlock
Namespace Prefix: | utl_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration