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Stockholders' Equity - Stock-based Compensation (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Sep. 30, 2018 USD ($) ShareBasedCompensationPlan $ / shares shares	Sep. 30, 2017 USD ($) shares
Stock-based Compensation
Stock-based compensation expense, before taxes | $	$ 5,463	$ 5,487
Less: related income tax benefit | $	(1,341)	(1,693)
Stock-based compensation expense, net of estimated taxes | $	4,122	$ 3,794
RSU
Stock-based Compensation
Unrecognized compensation cost | $	$ 29,000
Weighted-average period	1 year 8 months 12 days
Shares
Nonvested at the beginning of the period (in shares)	526,377
Granted (in shares)	323,141
Vested (in shares)	(340,082)
Forfeited (in shares)	(8,957)
Nonvested at the end of the period (in shares)	500,479
Weighted-Average Fair Value
Nonvested at the beginning of the period (in dollars per share) | $ / shares	$ 71.56
Granted (in dollars per share) | $ / shares	73.80
Vested (in dollars per share) | $ / shares	70.68
Forfeited (in dollars per share) | $ / shares	72.95
Nonvested at the end of the period (in dollars per share) | $ / shares	$ 73.58
Stock options
Stock-based Compensation
Unrecognized compensation cost | $	$ 500
Weighted-average period	1 year 9 months 18 days
Number of Options
Outstanding at the beginning of the period (in shares)	677,525
Exercised (in shares)	(9,034)
Expired or forfeited (in shares)	(4,741)
Outstanding at the end of the period (in shares)	663,750
Exercisable at the end of the period (in shares)	632,251
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 32.80
Exercised (in dollars per share) | $ / shares	41.32
Expired or forfeited (in dollars per share) | $ / shares	68.64
Outstanding at the end of the period (in dollars per share) | $ / shares	32.43
Exercisable at the end of the period (in dollars per share) | $ / shares	$ 29.95
Weighted-Average Remaining Contractual Term
Outstanding at the end of the period	2 years 7 months 6 days
Exercisable at the end of the period	2 years 3 months 18 days
Aggregate Intrinsic Value
Outstanding at the end of the period | $	$ 29,344
Exercisable at the end of the period | $	$ 29,317
Performance-based restricted stock units
Shares
Granted (in shares)	96,151	117,346
Performance-based restricted stock units | Minimum
Weighted-Average Fair Value
Payout as a percentage of the original number of shares awarded or units awarded, which are converted into shares of the Company's common stock	0.00%
Performance-based restricted stock units | Maximum
Weighted-Average Fair Value
Payout as a percentage of the original number of shares awarded or units awarded, which are converted into shares of the Company's common stock	280.00%
2012 Plan
Weighted-Average Fair Value
Shares available for grant	1,700,000
2012 Plan | Restricted stock and RSU
Weighted-Average Fair Value
Number of shares available for grant reduced for each award granted	1.87
Number of shares available for grant increased for each award forfeited and returned	1.87
2005 AS&E Plan and the 2014 AS&E Plan
Stock-based Compensation
Number of share-based employee compensation plans assumed | ShareBasedCompensationPlan	2
2005 AS&E Plan and the 2014 AS&E Plan | RSU
Shares
Granted (in shares)	0
2006 Plan
Number of Options
Granted (in shares)	0
Cost of goods sold
Stock-based Compensation
Stock-based compensation expense, before taxes | $	$ 207	$ 241
Selling, general and administrative
Stock-based Compensation
Stock-based compensation expense, before taxes | $	5,111	5,111
Research and development
Stock-based Compensation
Stock-based compensation expense, before taxes | $	$ 145	$ 135

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