Summary of Significant Accounting Policies (Tables)

12 Months Ended

Jun. 30, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Property, Plant and Equipment, Estimated Useful Lives

Property, plant and equipment is recorded at cost and depreciated using the straight-line method over the estimated useful lives of the related assets as follows:

Machinery and equipment	3 to 7 years
Furniture and fixtures	5 years
Software	3 to 5 years
Buildings	39 years
Building improvements	20 years
Land improvements	15 years
Leasehold improvements	shorter of lease term or estimated useful life

Reconciliation of the Changes in Accrued Warranty Costs

The following table presents for the years ended June 30, 2015, 2014 and 2013, the reconciliation of the changes in accrued warranty costs which is included as a component of accrued liabilities (in thousands):

	June 30,
	2015			2014			2013
Balance, beginning of year	$	7,083		$	6,472		$	5,522
Provision for warranty	15,771			14,175			13,438
Costs charged to accrual	(14,950		)	(13,950		)	(12,487		)
Change in estimated liability for pre-existing warranties	(204		)	386			(1		)
Balance, end of year	$	7,700		$	7,083		$	6,472

Computation of Basic and Diluted Net Income Per Common Share Using Two-class Method

The computation of basic and diluted net income per common share using the two-class method is as follows (in thousands, except per share amounts):

	Years Ended June 30,
	2015		2014			2013
Basic net income per common share calculation
Net income	$	101,863	$	54,157		$	21,279
Less: Undistributed earnings allocated to participating securities	—		(36		)	(106		)
Net income attributable to common shares—basic	$	101,863	$	54,121		$	21,173
Weighted-average number of common shares used to compute basic net income per common share	46,434		43,599			41,992
Basic net income per common share	$	2.19	$	1.24		$	0.50
Diluted net income per common share calculation
Net income	$	101,863	$	54,157		$	21,279
Less: Undistributed earnings allocated to participating securities	—		(34		)	(101		)
Net income attributable to common shares—diluted	$	101,863	$	54,123		$	21,178
Weighted-average number of common shares used to compute basic net income per common share	46,434		43,599			41,992
Dilutive effect of options and restricted stock units to purchase common stock	3,660		2,913			1,915
Weighted-average number of common shares used to compute diluted net income per common share	50,094		46,512			43,907
Diluted net income per common share	$	2.03	$	1.16		$	0.48