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Settlement Agreement (Details) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Settlement Agreement (Details) $ in Thousands	Mar. 31, 2016 USD ($)	Mar. 31, 2016 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Mar. 07, 2016 customer
Settlement Agreement
Reduction in net sales	$ 23,598	$ 23,598
Settlement Agreement \| Settled litigation
Settlement Agreement
Number of customers involved in litigation settlement agreement \| customer						1
Reduction in net sales		$ 23,600
Settlement Agreement \| Settled litigation \| Forecast
Settlement Agreement
Settlement in cash			$ 10,000	$ 8,000	$ 8,000
Settlement in credit memorandum			$ 12,000	$ 10,000