Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 149,032	$ 208,898
Short-term investments	227,845	144,797
Accounts receivable, net	256,014	261,307
Inventories	174,903	163,724
Deferred income taxes	22,691	23,088
Prepaid expenses and other current assets	33,724	32,415
Total current assets	864,209	834,229
Property and equipment, net	19,025	15,884
Intangibles, net	27,621	20,956
Goodwill	100,880	85,944
Other non-current assets	22,834	14,357
Total assets	1,034,569	971,370
Current liabilities:
Accounts payable	87,310	117,285
Accrued employee compensation	18,338	26,896
Other accrued liabilities	126,255	120,480
Deferred revenue	27,645	40,093
Income taxes payable	1,382	4,207
Total current liabilities	260,930	308,961
Non-current income taxes payable	13,735	18,657
Other non-current liabilities	5,293	4,995
Total liabilities	279,958	332,613
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock: $0.001 par value; 5,000,000 shares authorized; none issued or outstanding	0	0
Common stock: $0.001 par value; 200,000,000 shares authorized; shared issued and outstanding: 38,341,644 and 37,646,872 at December 31, 2012 and 2011, respectively	38	38
Additional paid-in capital	394,427	364,243
Cumulative other comprehensive income	4	23
Retained earnings	360,142	274,453
Total stockholders’ equity	754,611	638,757
Total liabilities and stockholders’ equity	$ 1,034,569	$ 971,370