Commitments and Contingencies (Details 2) (USD $)	6 Months Ended		1 Months Ended	12 Months Ended	1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Feb. 29, 2012 item	Sep. 30, 2010 item	Dec. 31, 2012
Commitments and Contingencies
Long term capital commitments on property, plant and equipment	$ 1,700,000
Legal Matters
Commitments and Contingencies
Legal fees	1,700,000	3,900,000
Total liability accrued	2,500,000
Legal Matters | Minimum
Commitments and Contingencies
Potential loss for unresolved matters	2,500,000
Fentress Families Trust
Commitments and Contingencies
Number of plaintiffs			383
Number of defendants			15
Damages for removal and remediation of fly ash and water supply			850,000,000
Damages for vexation			1,900,000,000
Damages for others			8,000,000
Damages for properties plus prejudgment interest, attorney fees and costs			55,000,000
Additional damages sought by other plaintiffs			307,200,000
Number of insurers who have denied coverage				2
CPM Virginia LLC
Commitments and Contingencies
Loss contingency damages sought value					$ 500,000
Loss contingency potential damages sought	CPM alleged multiple causes of action and claimed hundreds of millions of dollars in damages, including site remediation costs, punitive damages, and attorney fees.