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Fair Value Measurements - Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis (Details) - USD ($)
Jun. 30, 2018
Jun. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Preferred stock $ 0 $ 368,000
Estimate of Fair Value Measurement    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Preferred stock   368,000
Coffee-related derivative liabilities 3,467,000 2,179,000
Coffee-related derivative liabilities 219,000 190,000
Estimate of Fair Value Measurement | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Preferred stock   0
Coffee-related derivative liabilities 0 0
Coffee-related derivative liabilities 0 0
Estimate of Fair Value Measurement | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Preferred stock   368,000
Coffee-related derivative liabilities 3,467,000 2,179,000
Coffee-related derivative liabilities 219,000 190,000
Estimate of Fair Value Measurement | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Preferred stock   0
Coffee-related derivative liabilities 0 0
Coffee-related derivative liabilities $ 0 0
Estimate of Fair Value Measurement | Coffee-related Derivative Instruments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Coffee-related derivative assets   132,000
Estimate of Fair Value Measurement | Coffee-related Derivative Instruments | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Coffee-related derivative assets   0
Estimate of Fair Value Measurement | Coffee-related Derivative Instruments | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Coffee-related derivative assets   132,000
Estimate of Fair Value Measurement | Coffee-related Derivative Instruments | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Coffee-related derivative assets   $ 0