Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash Flows From Operating Activities:
Net Earnings	$ 16,131	$ 13,962
Net earnings	12,468	10,626
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	51,949	51,818
Deferred income tax expense	6,276	7,795
Net unrealized (gains) losses on commodity derivatives	2,761	4,902
Realized (gains) on available-for-sale securities	(2,573)	(1,530)
Stock based compensation expense	2,131	1,903
Other, net	1,005	(351)
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	17,207	4,062
Materials, supplies, and fuel stock	5,894	944
Other current assets	8,344	2,335
Other assets	6,386	8,774
Accounts payable	(34,373)	(17,895)
Accrued interest and taxes	25,813	25,430
Other current liabilities	(30,359)	(38,761)
Other liabilities	(199)	(64,763)
Net cash flows from operating activities	76,393	(1,375)
Cash Flows From Investing Activities:
Additions to utility and non-utility plant	(83,838)	(73,584)
Proceeds from sales of available-for-sale securities	22,804	14,284
Purchases of available-for-sale securities	(23,612)	(15,128)
Return of principal on PVNGS lessor notes	10,231	10,965
Other, net	13	1,247
Net cash flows from investing activities	(74,402)	(62,216)
Cash Flows From Financing Activities:
Short-term borrowings (repayments), net	(49,200)	84,600
Long-term borrowings	175,000	0
Repayment of long-term debt	(75,000)	0
Proceeds from stock option exercise	3,258	2,293
Awards of common stock	(11,639)	(9,651)
Dividends paid	(14,868)	(11,683)
Valencia’s transactions with its owner	(4,369)	(5,260)
Other, net	(539)	(584)
Net cash flows from financing activities	22,643	59,715
Change in Cash and Cash Equivalents	24,634	(3,876)
Cash and Cash Equivalents at Beginning of Period	2,533	8,985
Cash and Cash Equivalents at End of Period	27,167	5,109
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	4,718	4,817
Income taxes paid (refunded), net	(1,419)	(603)
Supplemental schedule of noncash investing activities:
Changes in accrued plant additions	(13,095)	(3,847)
Public Service Company of New Mexico [Member]
Cash Flows From Operating Activities:
Net Earnings	11,205	14,773
Net earnings	7,674	11,569
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	35,950	34,655
Deferred income tax expense	4,185	6,685
Net unrealized (gains) losses on commodity derivatives	2,761	4,902
Realized (gains) on available-for-sale securities	(2,573)	(1,530)
Other, net	1,042	(346)
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	15,018	5,467
Materials, supplies, and fuel stock	5,974	879
Other current assets	6,809	(84)
Other assets	6,042	8,772
Accounts payable	(31,847)	(18,857)
Accrued interest and taxes	22,362	20,932
Other current liabilities	(29,609)	(44,068)
Other liabilities	(806)	(64,893)
Net cash flows from operating activities	46,513	(32,713)
Cash Flows From Investing Activities:
Additions to utility and non-utility plant	(51,594)	(44,389)
Proceeds from sales of available-for-sale securities	22,804	14,284
Purchases of available-for-sale securities	(23,612)	(15,128)
Return of principal on PVNGS lessor notes	10,231	10,965
Other, net	(1)	1,220
Net cash flows from investing activities	(42,172)	(33,048)
Cash Flows From Financing Activities:
Short-term borrowings (repayments), net	(49,200)	67,800
Short-term borrowings (repayments), affiliate, net	(32,500)	0
Long-term borrowings	175,000	0
Repayment of long-term debt	(75,000)	0
Dividends paid	(132)	(132)
Valencia’s transactions with its owner	(4,369)	(5,260)
Other, net	(409)	(584)
Net cash flows from financing activities	13,390	61,824
Change in Cash and Cash Equivalents	17,731	(3,937)
Cash and Cash Equivalents at Beginning of Period	21	3,958
Cash and Cash Equivalents at End of Period	17,752	21
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	4,222	4,304
Income taxes paid (refunded), net	(215)	0
Supplemental schedule of noncash investing activities:
Changes in accrued plant additions	(8,133)	1,128
Texas-New Mexico Power Company [Member]
Cash Flows From Operating Activities:
Net earnings	6,803	3,726
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	12,851	12,686
Deferred income tax expense	3,665	2,448
Other, net	(36)	0
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	2,189	(1,405)
Materials, supplies, and fuel stock	(81)	65
Other current assets	2,446	218
Other assets	302	(58)
Accounts payable	(2,551)	4,130
Accrued interest and taxes	335	686
Other current liabilities	(1,768)	(1,278)
Other liabilities	1,465	1,076
Net cash flows from operating activities	25,620	22,294
Cash Flows From Investing Activities:
Additions to utility and non-utility plant	(27,420)	(24,594)
Net cash flows from investing activities	(27,420)	(24,594)
Cash Flows From Financing Activities:
Short-term borrowings (repayments), net	0	25,000
Short-term borrowings (repayments), net	1,800	(22,700)
Net cash flows from financing activities	1,800	2,300
Change in Cash and Cash Equivalents	0	0
Cash and Cash Equivalents at Beginning of Period	1	1
Cash and Cash Equivalents at End of Period	1	1
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	73	171
Income taxes paid (refunded), net	(1,204)	(604)
Supplemental schedule of noncash investing activities:
Changes in accrued plant additions	$ (1,109)	$ (932)