Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 229,235	$ 274,030
Short-term investments	182,060	197,163
Accounts receivable, net	185,658	202,329
Inventories, net	189,992	173,052
Prepaid expenses and other current assets	58,410	70,075
Deferred income taxes, net	33,675	31,171
Total current assets	879,030	947,820
Property and equipment, net	260,775	264,086
Goodwill	169,770	144,325
Intangible assets, net	82,245	78,282
Other long-term assets	21,487	20,978
Total assets	1,413,307	1,455,491
Current liabilities:
Accounts payable	53,762	58,603
Accrued compensation	28,946	33,774
Deferred revenue - current	104,509	105,964
Accrued expenses and other liabilities	14,078	14,714
Other taxes payable	34,636	34,602
Total current liabilities	235,931	247,657
Long-term debt	25,000
Deferred income taxes	44,093	47,406
Liability for uncertain tax positions	10,379	10,127
Deferred revenue- long term	26,427	26,452
Other long-term liabilities	11,874	6,353
Total liabilities	$ 353,704	$ 337,995
Commitments and contingencies
Stockholders' equity:
Preferred stock: par value $0.01; 5,000,000 shares authorized; none issued and outstanding
Common stock: par value $0.01; 360,000,000 shares authorized; 126,928,562 shares and 127,849,271 shares issued and outstanding, respectively	$ 1,269	$ 1,278
Additional paid-in capital	694,817	662,889
Retained earnings	395,154	464,993
Accumulated other comprehensive loss	(31,637)	(11,664)
Total stockholders' equity	1,059,603	1,117,496
Total liabilities and stockholders' equity	$ 1,413,307	$ 1,455,491