Revenue from Contracts with Customers - Disaggregation of revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 54,944	$ 49,998	$ 158,408	$ 158,976
North America
Disaggregation of Revenue [Line Items]
Net sales	32,519	33,369	85,609	97,475
International
Disaggregation of Revenue [Line Items]
Net sales	22,425	16,629	72,799	61,501
United States | North America
Disaggregation of Revenue [Line Items]
Net sales	30,307	31,288	79,989	90,996
Canada & Mexico | North America
Disaggregation of Revenue [Line Items]
Net sales	2,212	2,081	5,620	6,479
Brazil | International
Disaggregation of Revenue [Line Items]
Net sales	14,901	8,729	47,302	36,551
United Kingdom | International
Disaggregation of Revenue [Line Items]
Net sales	4,269	5,333	14,818	15,936
China | International
Disaggregation of Revenue [Line Items]
Net sales	1,655	1,338	5,240	4,505
Australia & New Zealand | International
Disaggregation of Revenue [Line Items]
Net sales	$ 1,600	$ 1,229	$ 5,439	$ 4,509