Investment in Affiliate	9 Months Ended
Investment in Affiliate	Sep. 30, 2011
Investment in Affiliate [Abstract]
Investment in Affiliate	Note 6: Investment in Affiliate Cepolk Holdings, Inc. (“CHI”), a subsidiary within the Climate Control Business, is a limited partner and has a 50% equity interest in Cepolk Limited Partnership (“Partnership”), which is accounted for on the equity method. The Partnership owns an energy savings project located at the Ft. Polk Army base in Louisiana. The income recognized from the Partnership is reported as equity in earnings of affiliate. During 2010, CHI filed a lawsuit against the general partner of the Partnership and subsequently, the general partner filed a lawsuit against CHI. During June 2011, these lawsuits involving the Partnership were settled through mediation. As the result of this settlement, our equity in earnings of affiliate decreased by approximately $480,000 for the nine months ended September 30, 2011. In addition, CHI will receive an increase of $74,000 in the quarterly distribution from the Partnership, which began during the third quarter of 2011.

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.