Benefit Plans - ESPP Information (Details) - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
	Jan. 01, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Equity Incentive Plans
Stock-based compensation expense		$ 47,493	$ 38,765	$ 30,354
Employee stock purchase plan shares
Equity Incentive Plans
Offering period		6 months
Percentage of employee compensation, maximum		10.00%
Percentage of fair market value as a purchase price		85.00%
Maximum value of purchase per employee		$ 25
Number of shares per employee, maximum		2
Period during which shares can be purchased		1 year
Number of shares of common stock reserved for issuance		898
Actual increase in number of shares reserved for issuance	0
Potential number of additional shares reserved for issuance each year		400
Potential number of additional shares reserved for issuance each year (as percent)		0.75%
Number of shares issued		97
Stock-based compensation expense		$ 3,235	$ 1,949	$ 1,331
Valuation assumptions:
Expected dividend yield		0.00%	0.00%	0.00%
Expected term (years)		6 months	6 months	6 months
Employee stock purchase plan shares | Minimum
Valuation assumptions:
Expected volatility		38.60%	33.50%	28.30%
Risk-free interest rate		0.15%	2.10%	1.02%
Employee stock purchase plan shares | Maximum
Equity Incentive Plans
Offering period		27 months
Valuation assumptions:
Expected volatility		72.20%	38.60%	39.10%
Risk-free interest rate		2.44%	2.48%	2.10%