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Fair Value of Derivative and Other Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2012

Fair Value of Derivative and Other Financial Instruments [Line Items]

Fair Value, Assets And Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

A reconciliation of the changes in Level 3 fair value measurements for PNMR is as follows. PNM had no Level 3 fair value measurements during the nine months ended September 30, 2012 and 2011.

	Three Months Ended								Nine Months Ended
	September 30,								September 30,
	2012				2011				2012				2011
PNMR	(In thousands)
Balance at beginning of period	$	—			$	4,392			$	—			$	(822	)
Total gains (losses) included in earnings	—				(5,025		)		—				201
Purchases	—				429				—				3,163
Settlements	—				1,142				—				(1,604		)
Balance at end of period	$	—			$	938			$	—			$	938
Total gains (losses) included in earnings attributable to the change in unrealized gains or losses relating to assets still held at the end of the period	$	—			$	589			$	—			$	1,455

Fair Value, by Balance Sheet Grouping [Table Text Block]

The carrying amounts and fair values of investments in PVNGS lessor notes, other investments, and long-term debt, which are not recorded at fair value on the Condensed Consolidated Balance Sheets are presented below:

									GAAP Fair Value Hierarchy(1)
	Carrying Amount				Fair Value				Level 1				Level 2				Level 3
September 30, 2012	(In thousands)
PNMR
Long-term debt	$	1,674,511			$	2,107,877			$	—			$	2,102,638			$	5,239
Investment in PVNGS lessor notes	$	78,023			$	78,420			$	—			$	—			$	78,420
Other investments	$	7,390			$	12,059			$	758			$	—			$	11,301
PNM
Long-term debt	$	1,215,569			$	1,512,711			$	—			$	1,512,711			$	—
Investment in PVNGS lessor notes	$	78,023			$	78,420			$	—			$	—			$	78,420
Other investments	$	1,398			$	1,443			$	491			$	—			$	952
TNMP
Long-term debt	$	311,432			$	426,934			$	—			$	426,934			$	—
Other investments	$	267			$	267			$	267			$	—			$	—
December 31, 2011
PNMR
Long-term debt	$	1,674,013			$	1,873,002
Investment in PVNGS lessor notes	$	107,094			$	108,742
Other investments	$	12,207			$	14,208
PNM
Long-term debt	$	1,215,540			$	1,294,846
Investment in PVNGS lessor notes	$	107,094			$	108,742
Other investments	$	2,900			$	3,052
TNMP
Long-term debt	$	310,963			$	413,966
Other investments	$	271			$	271

⁽¹⁾ GAAP does not require disclosure of the fair value hierarchy information prior to 2012.

PNMR and PNM [Member]

Fair Value of Derivative and Other Financial Instruments [Line Items]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

Commodity derivative instruments are summarized as follows:

	Economic Hedges
	September 30, 2012				December 31, 2011
PNMR and PNM	(In thousands)
Current assets	$	1,184			$	3,713
Current liabilities	(1,888		)		(1,632		)
Long-term liabilities	(2,770		)		(2,437		)
	(4,658		)		(4,069		)
Net	$	(3,474	)		$	(356	)

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block]

The following table presents the effect of commodity derivative instruments on earnings, excluding income tax effects.

	Economic Hedges
	Three Months Ended								Nine Months Ended
	September 30,								September 30,
	2012				2011				2012				2011
PNMR	(In thousands)
Electric operating revenues	$	(740	)		$	2,915			$	897			$	4,250
Cost of energy	263				(2,873		)		(278		)		(2,788		)
Total gain (loss)	$	(477	)		$	42			$	619			$	1,462
PNM
Electric operating revenues	$	(740	)		$	2,915			$	897			$	4,250
Cost of energy	263				(562		)		(278		)		(404		)
Total gain (loss)	$	(477	)		$	2,353			$	619			$	3,846

Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]

Commodity contract volume positions are presented in Decatherms for gas related contracts and in MWh for power related contracts. The table below presents PNMR’s and PNM’s net buy (sell) volume positions:

	Economic Hedges
	Decatherms			MWh
September 30, 2012
PNMR and PNM	1,435,000			(1,786,923	)
December 31, 2011
PNMR and PNM	1,499,000			(366,448	)

Schedule of Collateral Related to Derivative [Table Text Block]

Net exposure is the net contractual liability for all contracts, including those designated as normal purchases and sales, offset by existing cash collateral and by any offsets available under master netting agreements, including both asset and liability positions.

Contingent Feature – Credit Rating Downgrade		Contractual Liability				Existing Cash Collateral				Net Exposure
		(In thousands)
September 30, 2012
PNMR and PNM		$	3,977			$	—			$	3,943
December 31, 2011
PNMR and PNM		$	4,036			$	—			$	4,036

Available-for-sale Securities [Table Text Block]

The proceeds and gross realized gains and losses on the disposition of available-for-sale securities for PNMR and PNM are shown in the following table. Realized gains and losses are determined by specific identification of costs of securities sold.

	Three Months Ended								Nine Months Ended
	September 30,								September 30,
	2012				2011				2012				2011
	(In thousands)
Proceeds from sales	$	90,518			$	26,312			$	136,305			$	121,202
Gross realized gains	$	6,263			$	2,800			$	11,029			$	16,290
Gross realized (losses)	$	(5,131	)		$	(1,847	)		$	(7,055	)		$	(4,129	)

The fair value and gross unrealized gains of investments in available-for-sale securities are presented in the following table.

	September 30, 2012								December 31, 2011
	Unrealized Gains				Fair Value				Unrealized Gains				Fair Value
					(In thousands)
Equity securities:
Domestic value	$	5,083			$	29,856			$	3,549			$	25,143
Domestic growth	20,062				53,246				16,714				52,187
International and other	434				12,064				662				12,754
Fixed income securities:
Municipals	4,307				44,173				2,861				41,463
U.S. Government	1,451				33,479				1,353				25,367
Corporate and other	1,167				13,788				742				9,171
Cash investments	—				2,820				—				2,766
	$	32,504			$	189,426			$	25,881			$	168,851

Investments Classified by Contractual Maturity Date [Table Text Block]

At September 30, 2012, the available-for-sale and held-to-maturity debt securities had the following final maturities:

	Fair Value
	Available-for-Sale				Held-to-Maturity
	PNMR and PNM				PNMR				PNM
	(In thousands)
Within 1 year	$	1,543			$	951			$	951
After 1 year through 5 years	30,977				85,484				78,420
After 5 years through 10 years	14,418				2,110				—
After 10 years through 15 years	9,196				—				—
After 15 years through 20 years	12,102				—				—
After 20 years	23,204				—				—
	$	91,440			$	88,545			$	79,371

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]

Items recorded at fair value on the Condensed Consolidated Balance Sheets are presented below:

					GAAP Fair Value Hierarchy
	Fair Value				Level 1				Level 2				Level 3
September 30, 2012					(In thousands)
PNMR and PNM
Decommissioning and reclamation investments
Cash and equivalents	$	2,820			$	2,820			$	—			$	—
Equity securities:
Domestic value	29,856				29,856				—				—
Domestic growth	53,246				53,246				—				—
International and other	12,064				12,064				—				—
Fixed income securities:
U.S. government	33,479				29,746				3,733				—
Municipals	44,173				—				44,173				—
Corporate and other	13,788				—				13,788				—
Total	$	189,426			$	127,732			$	61,694			$	—
Commodity derivative assets	$	1,184			$	—			$	1,184			$	—
Commodity derivative liabilities	(4,658		)		—				(4,658		)		—
Net	$	(3,474	)		$	—			$	(3,474	)		$	—
December 31, 2011
PNMR and PNM
NDT investments
Cash and equivalents	$	2,766			$	2,766			$	—			$	—
Equity securities:
Domestic value	25,143				25,143				—				—
Domestic growth	52,187				52,187				—				—
International and other	12,754				12,754				—				—
Fixed income securities:
U.S. government	25,367				21,409				3,958				—
Municipals	41,463				—				41,463				—
Corporate and other	9,171				—				9,171				—
Total	$	168,851			$	114,259			$	54,592			$	—
Commodity derivative assets	$	3,713			$	—			$	3,713			$	—
Commodity derivative liabilities	(4,069		)		—				(4,069		)		—
Net	$	(356	)		$	—			$	(356	)		$	—

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