Benefit Plans - ESPP Information (Details) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
	Nov. 15, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Equity Incentive Plans
Compensation expense (in dollars)		$ 6,635	$ 4,780	$ 12,448	$ 8,492
Employee stock purchase plan shares
Equity Incentive Plans
Percentage of employee compensation, maximum		10.00%		10.00%
Percentage of fair market value as a purchase price				85.00%
Value of purchase per employee, maximum (in dollars)				$ 25
Number of shares per employee, maximum				2
Period during which shares can be purchased (in years)				1 year
Number of shares of common stock reserved for issuance		888		888
Potential number of additional shares reserved for issuance each year				600
Potential percentage of additional number of shares reserved for issuance each year				0.75%
Number of shares issued	64
Compensation expense (in dollars)		$ 319	$ 256	$ 663	$ 508
Valuation assumptions:
Expected dividend yield				0.00%	0.00%
Expected term (years)				6 months	6 months
Employee stock purchase plan shares | Minimum
Valuation assumptions:
Expected volatility				38.90%	44.10%
Risk-free interest rate				0.28%	0.11%
Employee stock purchase plan shares | Maximum
Equity Incentive Plans
Offering period				27 months
Valuation assumptions:
Expected volatility				53.40%	48.40%
Risk-free interest rate				0.61%	0.31%