Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Condensed Consolidated Statements of Income [Abstract]
Net revenue	$ 131,705	$ 142,406	$ 410,621	$ 455,172
Cost of revenue	69,525	84,790	218,458	269,690
Gross margin	62,180	57,616	192,163	185,482
Operating expenses:
Research and development	29,415	25,956	87,478	77,516
Selling, general, and administrative	18,031	17,244	52,461	51,750
Total operating expenses	47,446	43,200	139,939	129,266
Operating income	14,734	14,416	52,224	56,216
Interest income	231	242	682	679
Interest Expense	(4)	(4)	(13)	(13)
Impairment recovery on investments, net	46	10	59	20
Income before provision for income taxes	15,007	14,664	52,952	56,902
Provision for income taxes	3,561	1,168	11,108	7,029
Net income	$ 11,446	$ 13,496	$ 41,844	$ 49,873
Net income per share:
Basic	$ 0.34	$ 0.40	$ 1.27	$ 1.46
Diluted	$ 0.33	$ 0.38	$ 1.22	$ 1.40
Shares used in computing net income per share:
Basic	33,389	33,992	32,935	34,118
Diluted	35,179	35,346	34,374	35,565