Summary of Significant Accounting Policies - Narrative (Details) shares in Millions			3 Months Ended
	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Sep. 30, 2021 USD ($) region segment shares	Sep. 30, 2020 USD ($) shares
Concentration Risk [Line Items]
Foreign currency transaction gain (loss), realized			$ (200,000)	$ 100,000
Derivative instruments not designated as hedging instruments, gain (loss), net			(30,000)	(200,000)
Bad debt expenses			0	0
Inventory valuation reserves	$ 700,000	$ 500,000	$ 700,000
Money back guarantee period			30 days
Handling and restocking fee, percentage	10.00%		10.00%
Return liability reserve	$ 100,000	200,000	$ 100,000
Research and development			200,000	200,000
Present value of lease liabilities	17,766,000		17,766,000
Income tax expense			$ 1,116,000	$ 899,000
Antidilutive securities excluded from EPS calculation (in shares) | shares			0.2	0.2
Number of operating segments | segment			1
Number of geographic segments | region			2
Sandy, UT
Concentration Risk [Line Items]
Salvage value	0		$ 0
Abandonment expense				$ 800,000
Present value of lease liabilities	0		$ 0
Cash accounts held primarily at One Financial Institution
Concentration Risk [Line Items]
Concentration of credit risk	12,900,000	17,200,000
Cash held primarily at Other Financial Institutions
Concentration Risk [Line Items]
Concentration of credit risk	$ 7,000,000	$ 6,000,000