Summary of Significant Accounting Policies - Narrative (Details) shares in Thousands	3 Months Ended
	Sep. 30, 2020 USD ($) Segment shares	Sep. 30, 2019 USD ($) shares	Jun. 30, 2020 USD ($)
Concentration Risk [Line Items]
Foreign currency transaction gain (loss), realized	$ (100,000)	$ 100,000
Derivative instruments not designated as hedging instruments, gain (loss), net	(200,000)	(100,000)
Bad debt expenses	0	0
Inventory valuation reserves	$ 300,000		$ 200,000
Money back guarantee period	30 days
Handling and restocking fee, percentage	10.00%
Return liability reserve	$ 300,000		$ 300,000
Research and development	200,000	200,000
Salvage value	0
Present value of lease liabilities	15,459,000
Income tax expense	$ 899,000	$ 689,000
Antidilutive securities excluded from EPS calculation (in shares) | shares	200	21
Number of operating segments | Segment	1
Number of geographic segments | Segment	2
Sandy, UT
Concentration Risk [Line Items]
Present value of lease liabilities	$ 500,000
Selling, General and Administrative Expenses
Concentration Risk [Line Items]
Abandonment of ROU asset	800,000
Cash accounts held primarily at One Financial Institution
Concentration Risk [Line Items]
Concentration of credit risk	12,700,000
Cash held primarily at Other Financial Institutions
Concentration Risk [Line Items]
Concentration of credit risk	$ 5,300,000