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Earnings and Dividends Per Share (Tables) | 12 Months Ended
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Dec. 31, 2013
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | Information regarding the computation of earnings per share and dividends per share is as follows:
| Year Ended December 31,
| 2013 |  | 2012 |  | 2011
| (In thousands, except per share amounts)
Earnings Attributable to PNMR | $ | 100,507 |  |  | $ | 105,547 |  |  | $ | 176,359 |
Average Number of Common Shares: |  |  |  |  |
Outstanding during year | 79,654 |  |  | 79,654 |  |  | 85,558 |
Equivalents from convertible preferred stock (Note 5) | — |  |  | — |  |  | 3,469 |
Vested awards of restricted stock | 191 |  |  | 145 |  |  | 174 |
Average Shares - Basic | 79,845 |  |  | 79,799 |  |  | 89,201 |
Dilutive Effect of Common Stock Equivalents (1): |  |  |  |  |
Stock options and restricted stock | 586 |  |  | 618 |  |  | 556 |
Average Shares – Diluted | 80,431 |  |  | 80,417 |  |  | 89,757 |
Net Earnings Per Share of Common Stock: |  |  |  |  |
Basic | $ | 1.26 |  |  | $ | 1.32 |  |  | $ | 1.98 |
Diluted | $ | 1.25 |  |  | $ | 1.31 |  |  | $ | 1.96 |
Dividends Declared per Common Share | $ | 0.68 |  |  | $ | 0.58 |  |  | 0.50 |
(1) | Excludes out-of-the-money options for 509,916 shares of common stock at December 31, 2013. See Note 13.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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