Goodwill, Reporting Unit, Sensitivity analysis, Percentage Increase in Expected Return on Equity

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- Definition

Goodwill, Reporting Unit, Sensitivity analysis, Reduced Percentage of Fair Value in Excess of Carrying Value

+ References

No definition available.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Percentage of fair value of reporting unit in excess of carrying amount.

+ References

No definition available.

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Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Goodwill (Details) - USD ($) $ in Thousands	Dec. 31, 2008	Dec. 31, 2017	Dec. 31, 2016	Apr. 01, 2016	Dec. 31, 2015	Apr. 01, 2015	Apr. 01, 2012
Schedule of Goodwill and Other Intangible Assets [Line Items]
Goodwill		$ 278,297	$ 278,297		$ 278,297
Goodwill impairment	$ 174,400
Public Service Company of New Mexico
Schedule of Goodwill and Other Intangible Assets [Line Items]
Goodwill		51,632	51,632	$ 51,600		$ 51,600
Percentage of fair value in excess of carrying amount				25.00%
Percentage increase in expected return on equity				0.50%		0.50%
Reduced percentage of fair value in excess of carrying value				18.00%
Goodwill impairment	51,100
Texas-New Mexico Power Company
Schedule of Goodwill and Other Intangible Assets [Line Items]
Goodwill		$ 226,665	$ 226,665	$ 226,700
Percentage of fair value in excess of carrying amount				32.00%			26.00%
Percentage increase in expected return on equity				0.50%
Reduced percentage of fair value in excess of carrying value				21.00%
Goodwill impairment	$ 34,500