Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Net sales (including related party sales of $3,342 and $5,220 in the three months ended September 30, 2016 and 2015, respectively)	$ 528,968	$ 519,618
Cost of sales (including related party purchases of $50,205 and $59,261 in the three months ended September 30, 2016 and 2015, respectively)	448,904	447,403
Gross profit	80,064	72,215
Operating expenses:
Research and development	33,191	28,326
Sales and marketing	15,916	14,249
General and administrative	10,755	8,200
Total operating expenses	59,862	50,775
Income from operations	20,202	21,440
Interest and other income, net	29	87
Interest expense	(330)	(324)
Income before income tax provision	19,901	21,203
Income tax provision	6,369	7,504
Net income	$ 13,532	$ 13,699
Net income per common share:
Basic (in dollars per share)	$ 0.28	$ 0.29
Diluted (in dollars per share)	$ 0.26	$ 0.27
Weighted-average shares used in calculation of net income per common share:
Basic (in shares)	48,165	47,517
Diluted (in shares)	51,120	51,352