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Schedule I - Condensed Financial Information of Parent Company - Balance Sheets (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | --- | --- | ---
Assets |  |  |  |
Cash and cash equivalents | $ 4,522 | $ 46,051 | $ 28,274 | $ 2,533
Other, net | 73,444 | 82,104 |  |
Total current assets | 378,039 | 385,570 |  |
Property, plant and equipment, net of accumulated depreciation of $12,291 and $11,276 | 4,904,715 | 4,535,372 |  |
Other long-term assets | 547 | 604 |  |
Total assets | 6,471,080 | 6,009,328 | 5,790,237 |
Liabilities and Stockholders’ Equity |  |  |  |
Short-term debt | 287,100 | 250,600 |  |
Accrued interest and taxes | 61,871 | 58,306 |  |
Other current liabilities | 59,314 | 59,494 |  |
Total current liabilities | 805,108 | 641,120 |  |
Long-term debt | 2,119,364 | 1,966,969 |  |
Total liabilities | 4,714,679 | 4,271,579 |  |
Common stock (no par value; 120,000,000 shares authorized; issued and outstanding 79,653,624 shares) | 1,163,661 | 1,166,465 |  |
Accumulated other comprehensive income (loss), net of tax | (92,451) | (71,432) |  |
Retained earnings | 604,742 | 559,780 |  |
Total PNMR common stockholders’ equity | 1,675,952 | 1,654,813 |  |
Total liabilities and stockholders' equity | 6,471,080 | 6,009,328 |  |
PNM Resources [Member] |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 54 | 441 | $ 382 | $ 92
Intercompany receivables | 92,234 | 102,676 |  |
Other, net | 233 | 524 |  |
Total current assets | 92,521 | 103,641 |  |
Property, plant and equipment, net of accumulated depreciation of $12,291 and $11,276 | 26,366 | 26,707 |  |
Investment in subsidiaries | 1,986,276 | 1,822,593 |  |
Other long-term assets | 79,314 | 81,168 |  |
Total long-term assets | 2,091,956 | 1,930,468 |  |
Total assets | 2,184,477 | 2,034,109 |  |
Liabilities and Stockholders’ Equity |  |  |  |
Short-term debt | 226,100 | 191,600 |  |
Short-term debt-affiliate | 8,819 | 8,819 |  |
Accrued interest and taxes | 1,333 | 7,780 |  |
Other current liabilities | 19,374 | 18,282 |  |
Total current liabilities | 255,626 | 226,481 |  |
Long-term debt | 249,895 | 149,860 |  |
Other long-term liabilities | 3,004 | 2,955 |  |
Total liabilities | 508,525 | 379,296 |  |
Common stock (no par value; 120,000,000 shares authorized; issued and outstanding 79,653,624 shares) | 1,163,661 | 1,166,465 |  |
Accumulated other comprehensive income (loss), net of tax | (92,451) | (71,432) |  |
Retained earnings | 604,742 | 559,780 |  |
Total PNMR common stockholders’ equity | 1,675,952 | 1,654,813 |  |
Total liabilities and stockholders' equity | $ 2,184,477 | $ 2,034,109 |  |

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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(31)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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