Amount of other increase (decrease) in additional paid in capital (APIC).

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

+ References

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- Definition

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+ References

No definition available.

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Significant Accounting Policies and Responsibility for Financial Statements (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended				3 Months Ended		9 Months Ended
	Sep. 30, 2016	Jul. 31, 2016	Sep. 30, 2015	Jul. 31, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Dividends Payable [Line Items]
Dividends declared on common stock (in dollars per share)	$ 0.22	$ 0.22	$ 0.200	$ 0.20	$ 0.22	$ 0.200	$ 0.66	$ 0.600
Dividends declared on common stock							$ 52,571
Public Service Company of New Mexico [Member]
Dividends Payable [Line Items]
Equity contribution from parent							28,142
Dividends declared on common stock							4,142	$ 46,200
Texas-New Mexico Power Company [Member]
Dividends Payable [Line Items]
Equity contribution from parent							50,000
Dividends declared on common stock							17,965	$ 19,600
Common Stock [Member] \| Public Service Company of New Mexico [Member]
Dividends Payable [Line Items]
Equity contribution from parent							28,142
Common Stock [Member] \| Texas-New Mexico Power Company [Member]
Dividends Payable [Line Items]
Equity contribution from parent							0
Paid-in Capital [Member] \| Texas-New Mexico Power Company [Member]
Dividends Payable [Line Items]
Equity contribution from parent							$ 50,000