Income Taxes - Schedule of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Deferred Tax Assets, Net [Abstract]
Research and development credits	$ 24,304	$ 20,858
Deferred revenue	20,354	18,963
Inventory valuation	13,946	11,856
Capitalized research and development costs	7,509	0
Stock-based compensation	4,075	6,080
Lease obligations	3,632	0
Accrued vacation and bonus	3,281	2,681
Prepaid and accrued expenses	2,560	0
Warranty accrual	2,051	1,948
Bad debt and other reserves	1,917	1,283
Marketing fund accrual	548	554
Other	3,652	3,276
Total deferred income tax assets	87,829	67,499
Deferred tax liabilities-depreciation and other	(4,428)	(5,406)
Right of use asset	(3,612)	0
Valuation allowance	(24,891)	(20,967)
Deferred income tax assets, net	$ 54,898	$ 41,126