Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Jun. 30, 2018	Jun. 30, 2017
Property, Plant and Equipment
% of total	100.00%	100.00%	100.00%	100.00%
Cost of goods sold	$ 106,779	$ 105,629	$ 312,513	$ 302,349
Selling expenses	34,422	37,754	111,323	112,736
Coffee Brewing Equipment
Property, Plant and Equipment
Cost of goods sold	12,700	11,600	34,000	29,400
Interest Expense [Member] | Accounting Standards Update 2017-07
Property, Plant and Equipment
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	1,400	1,600	4,700	4,900	$ 6,600	$ 6,400
Other Expense [Member] | Accounting Standards Update 2017-07
Property, Plant and Equipment
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	1,400	1,700	4,900	5,000	$ (6,700)	$ (6,800)
Shipping and Handling [Member]
Property, Plant and Equipment
Selling expenses	$ 2,400	$ 4,200	$ 9,000	$ 9,300
Five Customers [Member]
Property, Plant and Equipment
% of total			33.00%		20.00%