Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Net sales (including related party sales of $6,067 and $3,418 in the three months ended March 31, 2015 and 2014, respectively, and $43,524 and $10,805 in the nine months ended March 31, 2015 and 2014, respectively)	$ 471,225	$ 373,755	$ 1,417,561	$ 1,039,133
Cost of sales (including related party purchases of $58,002 and $45,398 in the three months ended March 31, 2015 and 2014, respectively, and $169,918 and $145,139 in the nine months ended March 31, 2015 and 2014, respectively)	394,405	316,491	1,187,096	879,985
Gross profit	76,820	57,264	230,465	159,148
Operating expenses:
Research and development	25,542	20,570	72,516	61,234
Sales and marketing	12,496	9,416	34,656	27,257
General and administrative	7,334	5,806	17,334	16,938
Total operating expenses	45,372	35,792	124,506	105,429
Income from operations	31,448	21,472	105,959	53,719
Interest and other income, net	21	10	92	73
Interest expense	(277)	(156)	(656)	(535)
Income before income tax provision	31,192	21,326	105,395	53,257
Income tax provision	8,136	4,752	30,234	15,649
Net income	$ 23,056	$ 16,574	$ 75,161	$ 37,608
Net income per common share:
Basic (in dollars per share)	$ 0.49	$ 0.38	$ 1.63	$ 0.87
Diluted (in dollars per share)	$ 0.44	$ 0.35	$ 1.47	$ 0.82
Weighted-average shares used in calculation of net income per common share:
Basic (in shares)	46,824	43,992	46,138	43,128
Diluted (in shares)	52,008	47,424	51,102	45,857