Fair Value Measurements - Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis (Details) - USD ($)	Sep. 30, 2016	Jun. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preferred stock	$ 26,017,000	$ 25,591,000
Estimate of Fair Value Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preferred stock	26,017,000	25,591,000
Estimate of Fair Value Measurement | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preferred stock	23,114,000	21,976,000
Estimate of Fair Value Measurement | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preferred stock	2,903,000	3,615,000
Estimate of Fair Value Measurement | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preferred stock	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	3,908,000	6,346,000
Price Risk Derivative Instruments Not Designated as Hedging Instruments Asset, at Fair Value	123,000	240,000
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	0
Price Risk Derivative Instruments Not Designated as Hedging Instruments Asset, at Fair Value	0	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	3,908,000	6,346,000
Price Risk Derivative Instruments Not Designated as Hedging Instruments Asset, at Fair Value	123,000	240,000
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	0
Price Risk Derivative Instruments Not Designated as Hedging Instruments Asset, at Fair Value	$ 0	$ 0