Basis of Presentation and Summary of Significant Accounting Policies - Other Balance Sheet and Income Statement Items (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended				6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2013 Operating Expense	Jun. 30, 2013 Operating Expense	Jun. 30, 2013 Reduced Depreciation	Jun. 30, 2013 Reduced Depreciation	Jun. 30, 2013 Scenario, Previously Reported Reclassification of Labor and Overhead to Canola Oil and Meal Sold	Jun. 30, 2013 Scenario, Previously Reported Reclassification of Labor and Overhead to Canola Oil and Meal Sold	Jun. 30, 2014 Maximum	Jun. 30, 2014 Canola Segment	Dec. 31, 2013 Canola Segment	Jun. 30, 2014 Real Estate Segment
Goodwill [Roll Forward]
Goodwill, beginning balance			$ 4,702,000									$ 4,702,000	$ 4,702,000
Goodwill, Acquired During Period			4,993,000											4,993,000
Goodwill, ending balance	9,695,000		9,695,000									4,702,000	4,702,000	4,993,000
Cost of canola oil and meal sold	40,889,000	49,408,000	75,062,000	94,070,000					4,300,000	8,300,000
Quantifying Misstatement in Current Year Financial Statements, Amount					2,200,000	4,300,000	2,100,000	4,100,000
Provision for Income Taxes:
Likelihood uncertain tax percentage will be sustained (percent)											50.00%
Income tax provision (benefit)	$ 91,000	$ 114,000	$ 355,000	$ 898,000
Statutory income tax rate (percent)				35.00%