XML 56 R41.htm IDEA: XBRL DOCUMENT v3.3.1.900
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
 12 Months Ended
Jan. 31, 2016
USD ($)
shares
Jan. 31, 2015
USD ($)
Jan. 31, 2014
USD ($)
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]      
Number of Ethanol Entities Under Ownership Interest 3    
Number of Reportable Segments 1    
Concentration Risk Number of Customer 4    
Concentration Risk, Percentage 75.00% 74.00% 82.00%
Impairment of Real Estate $ 125,000 $ 68,000 $ 55,000
Depreciation 18,638,000 16,387,000 16,915,000
Interest Paid 0 2,136,000 $ 3,492,000
Deferred Tax Liabilities, Derivatives 300,000    
Derivative Settlement on Interest Rate Swap $ 1,142,000 1,687,000  
Employee Stock Ownership Plan (ESOP), Shares in ESOP (in Shares) | shares 550,000    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value $ 4,000,000 1,100,000  
Deferred Tax Expense from Stock Options Exercised $ 800,000 $ 400,000  
Customer Concentration Risk [Member]      
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]      
Concentration Risk, Percentage 47.00% 76.00%  
Minimum [Member] | Building and Building Improvements [Member]      
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]      
Property, Plant and Equipment, Estimated Useful Lives 15    
Minimum [Member] | Fixtures And Equipment [Member]      
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]      
Property, Plant and Equipment, Estimated Useful Lives 2    
Maximum [Member] | Building and Building Improvements [Member]      
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]      
Property, Plant and Equipment, Estimated Useful Lives 40    
Maximum [Member] | Fixtures And Equipment [Member]      
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]      
Property, Plant and Equipment, Estimated Useful Lives 20    
Cost of Sales [Member]      
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]      
Maximum Percentage of Equity Ownership Interest Which May be Considered for Equity Method of Accounting 20.00%