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Schedule I - Condensed Financial Information of Parent Company - Balance Sheets (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | --- | --- | ---
Assets |  |  |  |  |
Cash and cash equivalents | $ 2,122 | $ 3,974 | $ 5,522 | $ 54,222 |
Income taxes receivable | 7,965 | 6,879 |  |  |
Other, net | 53,725 | 47,358 |  |  |
Total current assets | 302,524 | 294,420 |  |  |
Property, plant and equipment, net of accumulated depreciation of $13,518 and $13,229 | 5,234,629 | 4,980,227 |  |  |
Other long-term assets | 297 | 503 |  |  |
Total assets | 6,865,551 | 6,646,103 | 6,471,080 |  |
Liabilities and Stockholders’ Equity |  |  |  |  |
Short-term debt | 235,900 | 305,400 |  |  |
Current maturities of long-term debt | 0 | 256,895 |  |  |
Accrued interest and taxes | 65,156 | 62,357 |  |  |
Other current liabilities | 54,678 | 53,850 |  |  |
Total current liabilities | 512,453 | 835,644 |  |  |
Long-term debt | 2,670,111 | 2,180,750 |  |  |
Total liabilities | 5,101,428 | 4,873,126 |  |  |
Common stock (no par value; 120,000,000 shares authorized; issued and outstanding 79,653,624 shares) | 1,153,113 | 1,157,665 |  |  |
Accumulated other comprehensive income (loss), net of tax | (108,684) | (95,940) |  |  |
Retained earnings | 643,953 | 633,528 |  |  |
Total PNMR common stockholders’ equity | 1,688,382 | 1,695,253 |  |  |
Total liabilities and stockholders' equity | 6,865,551 | 6,646,103 |  |  |
PNM Resources |  |  |  |  |
Assets |  |  |  |  |
Cash and cash equivalents | 93 | 21 | $ 54 |  | $ 441
Intercompany receivables | 82,539 | 96,227 |  |  |
Income taxes receivable | 7,856 | 1,818 |  |  |
Other, net | 5,635 | 1,937 |  |  |
Total current assets | 96,123 | 100,003 |  |  |
Property, plant and equipment, net of accumulated depreciation of $13,518 and $13,229 | 25,413 | 26,546 |  |  |
Investment in subsidiaries | 2,064,693 | 2,056,198 |  |  |
Other long-term assets | 60,265 | 66,090 |  |  |
Total long-term assets | 2,150,371 | 2,148,834 |  |  |
Total assets | 2,246,494 | 2,248,837 |  |  |
Liabilities and Stockholders’ Equity |  |  |  |  |
Short-term debt | 170,000 | 265,600 |  |  |
Short-term debt-affiliate | 8,819 | 11,919 |  |  |
Current maturities of long-term debt | 0 | 249,979 |  |  |
Accrued interest and taxes | 4,885 | 1,661 |  |  |
Other current liabilities | 23,297 | 21,274 |  |  |
Total current liabilities | 207,001 | 550,433 |  |  |
Long-term debt | 348,310 | 0 |  |  |
Other long-term liabilities | 2,803 | 3,151 |  |  |
Total liabilities | 558,114 | 553,584 |  |  |
Common stock (no par value; 120,000,000 shares authorized; issued and outstanding 79,653,624 shares) | 1,153,112 | 1,157,665 |  |  |
Accumulated other comprehensive income (loss), net of tax | (108,685) | (95,940) |  |  |
Retained earnings | 643,953 | 633,528 |  |  |
Total PNMR common stockholders’ equity | 1,688,380 | 1,695,253 |  |  |
Total liabilities and stockholders' equity | $ 2,246,494 | $ 2,248,837 |  |  |

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