Fair Value Measurements - Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis (Details) - Estimate of Fair Value Measurement - Coffee-related Derivative Instruments - USD ($)	Dec. 31, 2018	Jun. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Coffee-related derivative assets(1)	$ 5,000
Coffee-related derivative liabilities(1)	2,983,000	$ 3,467,000
Coffee-related derivative assets(1)	12,000
Coffee-related derivative liabilities(1)	1,557,000	219,000
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Coffee-related derivative assets(1)	0
Coffee-related derivative liabilities(1)	0	0
Coffee-related derivative assets(1)	0
Coffee-related derivative liabilities(1)	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Coffee-related derivative assets(1)	5,000
Coffee-related derivative liabilities(1)	2,983,000	3,467,000
Coffee-related derivative assets(1)	12,000
Coffee-related derivative liabilities(1)	1,557,000	219,000
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Coffee-related derivative assets(1)	0
Coffee-related derivative liabilities(1)	0	0
Coffee-related derivative assets(1)	0
Coffee-related derivative liabilities(1)	$ 0	$ 0