Fair Value Measurements - Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis (Details) - USD ($)	Dec. 31, 2016	Jun. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preferred stock	$ 26,190,000	$ 25,591,000
Estimate of Fair Value Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preferred stock	26,190,000	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	23,341,000	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	2,849,000	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	678,000	6,346,000
Price Risk Derivative Instruments Not Designated as Hedging Instruments Asset, at Fair Value		240,000
Coffee-related derivative liabilities	(1,115,000)
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
Coffee-related derivative liabilities	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	678,000	6,346,000
Price Risk Derivative Instruments Not Designated as Hedging Instruments Asset, at Fair Value		240,000
Coffee-related derivative liabilities	(1,115,000)
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
Coffee-related derivative liabilities	$ 0