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Equity Income in Unconsolidated Investment (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2013 Standard Steam Trust LLC [Member]	Sep. 30, 2013 Standard Steam Trust LLC [Member]	Dec. 31, 2013 Standard Steam Trust LLC [Member]	Sep. 30, 2014 Standard Steam Trust LLC [Member]
Noncontrolling Interest [Line Items]
Ownership percentage (in hundredths)								19.54%
Impairment of equity investment							$ 2,200,000
Equity gain (loss) from Standard Steam	0	11,000	0	(40,000)	11,000	(40,000)
Carrying amount of investment							$ 0

X

- Definition

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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Amount of unrealized loss recognized in the income statement from investments for which net asset value per share is calculated on unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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