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Consolidated Statements of Changes in Equity - USD ($) $ in Thousands | Total | Common Stock [Member] | AOCI [Member] | Retained Earnings [Member] | Total Stockholders' Equity [Member] | Non-controlling Interest in Valencia [Member] | Public Service Company of New Mexico [Member] | Public Service Company of New Mexico [Member] Common Stock [Member] | Public Service Company of New Mexico [Member] AOCI [Member] | Public Service Company of New Mexico [Member] Retained Earnings [Member] | Public Service Company of New Mexico [Member] Total Stockholders' Equity [Member] | Public Service Company of New Mexico [Member] Non-controlling Interest in Valencia [Member] | Texas-New Mexico Power Company [Member] | Texas-New Mexico Power Company [Member] Common Stock [Member] | Texas-New Mexico Power Company [Member] AOCI [Member] | Texas-New Mexico Power Company [Member] Paid-in Capital [Member] | Texas-New Mexico Power Company [Member] Retained Earnings [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2013 | $ 1,750,598 | $ 1,178,369 | $ (58,140) | $ 553,340 | $ 1,673,569 | $ 77,029 | $ 1,287,228 | $ 1,061,776 | $ (57,877) | $ 206,300 | $ 1,210,199 | $ 77,029 |  |  |  |  |
Beginning Balance at Dec. 31, 2013 |  |  | (58,140) |  |  |  |  |  | (57,877) |  |  |  | $ 502,931 | $ 64 | $ (263) | $ 404,166 | $ 98,964
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings (loss) | 130,909 |  |  | 116,782 | 116,782 | 14,127 | 101,453 |  |  | 87,326 | 87,326 | 14,127 |  |  |  |  |
Net Earnings | 116,254 |  |  |  |  |  | 87,326 |  |  |  |  |  | 37,807 |  |  |  | 37,807
Total other comprehensive income (loss) | (3,615) |  | (3,615) |  | (3,615) |  | (3,878) |  | (3,878) |  | (3,878) |  | 263 |  | $ 263 |  |
Subsidiary preferred stock dividends/dividends declared on preferred stock | (528) |  |  | (528) | (528) |  | (528) |  |  | (528) | (528) |  |  |  |  |  |
Dividends declared on common stock | (60,138) |  |  | (60,138) | (60,138) |  | (30,263) |  |  | (30,263) | (30,263) |  | (16,336) |  |  |  | (16,336)
Proceeds from stock option exercise | 6,999 | 6,999 |  |  | 6,999 |  |  |  |  |  |  |  |  |  |  |  |
Awards of common stock | (17,319) | (17,319) | 0 | 0 | (17,319) | 0 |  |  |  |  |  |  |  |  |  |  |
Excess tax (shortfall) from stock-based payment arrangements | (135) | (135) |  |  | (135) |  |  |  |  |  |  |  |  |  |  |  |
Stock based compensation expense | 5,931 | 5,931 |  |  | 5,931 |  |  |  |  |  |  |  |  |  |  |  |
Valencia’s transactions with its owner | (17,610) |  |  |  |  | (17,610) | (17,610) |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2014 | 1,795,092 | 1,173,845 | (61,755) | 609,456 | 1,721,546 | 73,546 | 1,336,402 | 1,061,776 | (61,755) | 262,835 | 1,262,856 | 73,546 |  |  |  |  |
Ending Balance at Dec. 31, 2014 |  |  | (61,755) |  |  |  |  |  | (61,755) |  |  |  | 524,665 | 64 |  | 404,166 | 120,435
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings (loss) | 31,078 |  |  | 16,168 | 16,168 | 14,910 | (324) |  |  | (15,234) | (15,234) | 14,910 |  |  |  |  |
Net Earnings | 15,640 |  |  |  |  |  | (15,234) |  |  |  |  |  | 41,963 |  |  |  | 41,963
Total other comprehensive income (loss) | (9,677) |  | (9,677) |  | (9,677) |  | (9,721) |  | (9,721) |  | (9,721) |  | 0 |  |  |  |
Subsidiary preferred stock dividends/dividends declared on preferred stock | (528) |  |  | (528) | (528) |  | (528) |  |  | (528) | (528) |  |  |  |  |  |
Dividends declared on common stock | (65,316) |  |  | (65,316) | (65,316) |  | (94,440) |  |  | (94,440) | (94,440) |  | (33,248) |  |  |  | (33,248)
Proceeds from stock option exercise | 5,619 | 5,619 |  |  | 5,619 |  |  |  |  |  |  |  |  |  |  |  |
Awards of common stock | (17,720) | (17,720) | 0 | 0 | (17,720) | 0 |  |  |  |  |  |  |  |  |  |  |
Excess tax (shortfall) from stock-based payment arrangements | (142) | (142) |  |  | (142) |  |  |  |  |  |  |  |  |  |  |  |
Stock based compensation expense | 4,863 | 4,863 |  |  | 4,863 |  |  |  |  |  |  |  |  |  |  |  |
Valencia’s transactions with its owner | (17,049) |  |  |  |  | (17,049) | (17,049) |  |  |  |  |  |  |  |  |  |
Equity contributions from parent |  |  |  |  |  |  | 175,000 | 175,000 |  |  | 175,000 |  |  |  |  |  |
Balance at Dec. 31, 2015 | 1,726,220 | 1,166,465 | (71,432) | 559,780 | 1,654,813 | 71,407 | 1,389,340 | 1,236,776 | (71,476) | 152,633 | 1,317,933 | 71,407 |  |  |  |  |
Ending Balance at Dec. 31, 2015 | 1,654,813 |  | (71,432) |  |  |  | 1,317,933 |  | (71,476) |  |  |  | 533,380 | 64 |  | 404,166 | 129,150
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings (loss) | 131,896 |  |  | 117,377 | 117,377 | 14,519 | 91,938 |  |  | 77,419 | 77,419 | 14,519 |  |  |  |  |
Net Earnings | 116,849 |  |  |  |  |  | 77,419 |  |  |  |  |  | 41,672 |  |  |  | 41,672
Total other comprehensive income (loss) | (21,019) |  | (21,019) | 0 | (21,019) |  | (20,952) |  | (20,952) |  | (20,952) |  | 0 |  |  |  |
Subsidiary preferred stock dividends/dividends declared on preferred stock | (528) |  |  | (528) | (528) |  | (528) |  |  | (528) | (528) |  |  |  |  |  |
Dividends declared on common stock | (71,887) |  |  | (71,887) | (71,887) |  | (4,142) |  |  | (4,142) | (4,142) |  | (31,817) |  |  |  | (31,817)
Proceeds from stock option exercise | 7,028 | 7,028 |  |  | 7,028 |  |  |  |  |  |  |  |  |  |  |  |
Awards of common stock | (15,451) | (15,451) | 0 | 0 | (15,451) | 0 |  |  |  |  |  |  |  |  |  |  |
Excess tax (shortfall) from stock-based payment arrangements | (15) | (15) |  |  | (15) |  |  |  |  |  |  |  |  |  |  |  |
Stock based compensation expense | 5,634 | 5,634 |  |  | 5,634 |  |  |  |  |  |  |  |  |  |  |  |
Valencia’s transactions with its owner | (17,006) |  |  |  |  | (17,006) | (17,006) |  |  |  |  |  |  |  |  |  |
Equity contributions from parent |  |  |  |  |  |  | 28,142 | 28,142 |  |  | 28,142 |  | 50,000 |  |  | 50,000 |
Balance at Dec. 31, 2016 | 1,744,872 | $ 1,163,661 | (92,451) | $ 604,742 | $ 1,675,952 | $ 68,920 | 1,466,792 | $ 1,264,918 | (92,428) | $ 225,382 | $ 1,397,872 | $ 68,920 |  |  |  |  |
Ending Balance at Dec. 31, 2016 | $ 1,675,952 |  | $ (92,451) |  |  |  | $ 1,397,872 |  | $ (92,428) |  |  |  | $ 593,235 | $ 64 |  | $ 454,166 | $ 139,005

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