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Optim Energy | 3 Months Ended
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Mar. 31, 2012
Equity Method Investments and Joint Ventures [Abstract] |
Optim Energy | Optim Energy Information concerning Optim Energy is discussed in Note 21 of the Notes to Consolidated Financial Statements in the 2011 Annual Reports on Form 10-K. PNMR and ECJV each had a 50 percent ownership interest in Optim Energy, a limited liability company, until September 23, 2011, when Optim Energy was restructured and PNM's interest was reduced to 1%. On January 4, 2012, ECJV exercised its option to acquire PNMR's remaining 1% ownership interest in Optim Energy at fair market value, which was determined to be zero. PNMR accounted for its investment in Optim Energy using the equity method of accounting until September 23, 2011 and then used the cost method through January 4, 2012. PNMR Services Company provided certain corporate services to Optim Energy through December 31, 2011 and is continuing to provide services with respect to certain open tax matters. PNMR fully impaired its investment in Optim Energy at December 31, 2010 and, in accordance with GAAP, did not recognize losses of Optim Energy from January 1, 2011 through September 23, 2011, when PNMR ceased to account for its investment using the equity method of accounting. Accordingly, Optim Energy had no impact on PNMR's December 31, 2011 balance sheet or the statements of earnings and statements of cash flows for 2012 and 2011. Therefore, summarized financial information for Optim Energy is not presented.

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- Definition The entire disclosure for equity investment, or group of investments, for which combined disclosure is appropriate, including: (a) the name of each investee and percentage of ownership of common stock, (b) accounting policies for investments in common stock, (c) difference between the amount at which the investment is carried and the amount of underlying equity in net assets and the accounting treatment of the difference, (d) the total fair value of each identified investment for which a market value is available, (e) summarized information as to assets, liabilities, and results of operations of the investees (for investments in unconsolidated subsidiaries, common stock of joint ventures, or other investments using the equity method), and (f) material effects of possible conversions, exercises, or contingent issuances of the investee. Other disclosures include (a) the names of any investee in which the investor owns 20 percent or more of the voting stock and investment is not accounted for using the equity method, and the reasons why not, and (b) the names of any investee in which the investor owns less than 20 percent of the voting stock and the investment is accounted for using the equity method, and the reasons why it is. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=6903645&loc=d3e32787-111569 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=6903645&loc=d3e32847-111569 + Details
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