Nature of Operations Nature of Operations (Details) (USD $)	9 Months Ended
	Sep. 30, 2014 Segment	Dec. 31, 2013	Sep. 30, 2014 Adjustments for New Accounting Pronouncement	Mar. 05, 2014 AgReserves Sale acre
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Land owned (in acres)				380,000
Number of reportable operating segments	4
Reduction to deferred tax asset			$ 1,700,000
Reduction to accrued liabilities and deferred credits	$ (37,802,000)	$ (49,345,000)	$ 1,700,000