Basis of Presentation and Summary of Significant Accounting Policies - Other Balance Sheet and Income Statement Items (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Goodwill [Roll Forward]
Goodwill, beginning balance			$ 4,702,000
Goodwill, Acquired During Period			4,993,000
Goodwill, ending balance	9,695,000		9,695,000		4,702,000
Provision for Income Taxes:
Income tax provision (benefit)	179,000	(3,637,000)	535,000	(2,739,000)
Statutory income tax rate (percent)				35.00%
Raw materials	9,500,000		9,500,000		2,600,000
Finished goods	4,800,000		4,800,000		5,300,000
Cost of canola oil and meal sold	43,214,000	53,083,000	118,277,000	147,153,000
Tax provision for taxable temorary difference related to investment in Mindjet not expected to reverse within period which would allow offsetting					3,800,000
Operating Expense
Provision for Income Taxes:
Quantifying Misstatement in Current Year Financial Statements, Amount		(2,100,000)		(6,500,000)
Reduced Depreciation
Provision for Income Taxes:
Quantifying Misstatement in Current Year Financial Statements, Amount		(2,100,000)		(6,100,000)
Scenario, Previously Reported | Reclassification of Labor and Overhead to Canola Oil and Meal Sold
Provision for Income Taxes:
Cost of canola oil and meal sold		4,200,000		12,600,000
Canola Segment
Goodwill [Roll Forward]
Goodwill, ending balance	4,702,000		4,702,000		4,702,000
Real Estate Segment
Goodwill [Roll Forward]
Goodwill, Acquired During Period			4,993,000
Goodwill, ending balance	$ 4,993,000		$ 4,993,000