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Rate and Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2014

Rate and Regulatory Matters [Abstract]

Schedule of regulatory assets

These items are detailed as follows:

		(Thousands of Dollars)
		December 31,								Remaining
Regulatory Assets		2014				2013				Recovery Periods
Retirement Benefits		$	47,868			$	20,826				Various
Income Taxes			17,195				12,207				Various
Rate Cases, Tank Painting, and Other			1,153				1,353				2-9 years
Total		$	66,216			$	34,386

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- 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

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