Segment Information - Summary of financial results for reportable segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Sales	$ 61,318	$ 54,054	$ 122,832	$ 103,464
Operating Income (Loss)	4,201	6,201	8,333	8,036
Unallocated
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Sales	0	0	0	0
Operating Income (Loss)	(1,742)	(1,923)	(3,694)	(3,757)
North American Operations
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Sales	32,666	27,106	66,475	53,090
North American Operations | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Sales	32,666	27,106	66,475	53,089
Operating Income (Loss)	1,549	3,688	4,050	4,516
North American Operations | Intercompany sales
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Intercompany sales	930	992	1,679	1,737
International Operations | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Sales	28,652	26,948	56,357	50,375
Operating Income (Loss)	4,394	4,436	7,977	7,277
International Operations | Intercompany sales
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Intercompany sales	$ 4,412	$ 2,610	$ 9,748	$ 5,396