Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Net sales (including related party sales of $10,879 and $3,859 in the three months ended December 31, 2014 and 2013, respectively, and $37,457 and $7,387 in the six months ended December 31, 2014 and 2013, respectively)	$ 503,014	$ 356,362	$ 946,336	$ 665,378
Cost of sales (including related party purchases of $57,513 and $54,424 in the three months ended December 31, 2014 and 2013, respectively, and $111,916 and $99,741 in the six months ended December 31, 2014 and 2013, respectively)	418,562	301,270	792,691	563,494
Gross profit	84,452	55,092	153,645	101,884
Operating expenses:
Research and development	25,465	20,428	46,974	40,664
Sales and marketing	11,158	8,976	22,160	17,841
General and administrative	4,944	5,484	10,000	11,132
Total operating expenses	41,567	34,888	79,134	69,637
Income from operations	42,885	20,204	74,511	32,247
Interest and other income, net	36	46	71	63
Interest expense	(183)	(184)	(379)	(379)
Income before income tax provision	42,738	20,066	74,203	31,931
Income tax provision	11,496	6,731	22,098	10,897
Net income	$ 31,242	$ 13,335	$ 52,105	$ 21,034
Net income per common share:
Basic (in dollars per share)	$ 0.68	$ 0.31	$ 1.14	$ 0.49
Diluted (in dollars per share)	$ 0.61	$ 0.30	$ 1.03	$ 0.47
Weighted-average shares used in calculation of net income per common share:
Basic (in shares)	46,131	42,915	45,802	42,706
Diluted (in shares)	51,091	45,039	50,567	45,052