Unaudited Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 134,601	$ 208,898
Short-term investments	227,819	144,797
Accounts receivable, net	248,862	261,307
Inventories	178,916	163,724
Deferred income taxes	22,705	23,088
Prepaid expenses and other current assets	38,173	32,415
Total current assets	851,076	834,229
Property and equipment, net	18,927	15,884
Intangibles, net	27,701	20,956
Goodwill	100,880	85,944
Other non-current assets	20,053	14,357
Total assets	1,018,637	971,370
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	91,070	117,285
Accrued employee compensation	21,116	26,896
Other accrued liabilities	120,829	120,480
Deferred revenue	28,205	40,093
Income taxes payable	1,829	4,207
Total current liabilities	263,049	308,961
Non-current income taxes payable	17,525	18,657
Other non-current liabilities	5,286	4,995
Total liabilities	285,860	332,613
Commitments and contingencies (Note 9)
Stockholders' equity:
Common stock	38	38
Additional paid-in capital	388,812	364,243
Cumulative other comprehensive income	(171)	23
Retained earnings	344,098	274,453
Total stockholders' equity	732,777	638,757
Total liabilities and stockholders' equity	$ 1,018,637	$ 971,370