Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012
Current assets:
Cash and cash equivalents	$ 890,629	$ 809,541
Accounts receivable, net of allowance for doubtful accounts of $8,009 and $7,313 at September 30, 2012 and June 30, 2012, respectively	266,537	283,160
Inventories (note 3)	193,172	174,351
Deferred income taxes	24,754	19,590
Income taxes receivable	3,091	2,282
Prepaid expenses and other current assets	72,034	72,227
Total current assets	1,450,217	1,361,151
Non-current assets:
Property, plant and equipment, net	438,357	434,363
Goodwill and other intangible assets, net (note 4)	332,946	311,036
Deferred income taxes	17,543	23,500
Other assets	5,596	7,819
Total non-current assets	794,442	776,718
Total assets	2,244,659	2,137,869
Current liabilities:
Accounts payable	52,914	55,006
Accrued expenses	132,100	127,381
Deferred revenue	42,978	41,563
Income taxes payable	24,326	27,777
Deferred income taxes	660	1,073
Current portion of long-term debt (note 5)	53	52
Total current liabilities	253,031	252,852
Non-current liabilities:
Deferred income taxes	9,167	8,843
Deferred revenue	14,301	14,384
Long-term debt (note 5)	265,785	250,783
Income taxes payable	3,452	3,380
Total non-current liabilities	292,705	277,390
Total liabilities	545,736	530,242
Commitments and contingencies (notes 8)
Stockholders' equity: (note 6)
Preferred stock, $0.01 par value, 2,000,000 shares authorized; none issued
Common stock, $0.004 par value, 350,000,000 shares authorized; 171,005,577 issued and 143,057,967 outstanding at September 30, 2012 and 169,752,781 issued and 142,021,032 outstanding at June 30, 2012	572	568
Additional paid-in capital	933,249	899,717
Retained earnings	1,413,711	1,366,712
Treasury stock, at cost, 27,947,612 shares at September 30, 2012, and 27,731,749 shares at June 30, 2012	(903,922)	(895,826)
Accumulated other comprehensive income	255,313	236,456
Total stockholders' equity	1,698,923	1,607,627
Total liabilities and stockholders' equity	$ 2,244,659	$ 2,137,869