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Stock-based Compensation - Determining Fair Value (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Risk-free interest rate	2.56%	2.47%
Expected term	6 years 18 days	5 years 9 months 26 days
Dividend yield	0.00%	0.00%	0.00%	0.00%
Volatility	50.25%	47.39%
Weighted-average fair value (in dollars per share)	$ 7.55	$ 10.79	$ 8.56	$ 11.45
Share-based Payment Arrangement, Additional Disclosure [Abstract]
Stock-based compensation expense before taxes	$ 4,960	$ 6,088	$ 16,081	$ 18,649
Income tax impact	(1,016)	(1,506)	(3,339)	(5,385)
Stock-based compensation expense, net	3,944	4,582	12,742	13,264
Cost of sales
Share-based Payment Arrangement, Additional Disclosure [Abstract]
Stock-based compensation expense before taxes	390	449	1,256	1,362
Research and development
Share-based Payment Arrangement, Additional Disclosure [Abstract]
Stock-based compensation expense before taxes	3,107	3,494	9,816	10,412
Sales and marketing
Share-based Payment Arrangement, Additional Disclosure [Abstract]
Stock-based compensation expense before taxes	418	482	1,359	1,545
General and administrative
Share-based Payment Arrangement, Additional Disclosure [Abstract]
Stock-based compensation expense before taxes	$ 1,045	$ 1,663	$ 3,650	$ 5,330
Minimum
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Risk-free interest rate			2.56%	1.92%
Expected term			6 years 18 days	5 years 9 months 26 days
Volatility			47.34%	45.32%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Risk-free interest rate			2.97%	2.47%
Volatility			50.25%	48.07%

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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