Condensed Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 59,303	$ 81,107
Short-term investments	182,162	180,159
Accounts receivable, net of allowance of $478 as of June 30, 2011 and December 31, 2010, respectively	22,000	22,815
Inventories	41,554	48,139
Prepaid expenses and other current assets	19,110	22,379
Total current assets	324,129	354,599
Property and equipment, net	15,876	16,959
Deferred income taxes	44,442	47,471
Other assets	32,259	34,535
Goodwill	22,286	20,144
Intangible assets, net	30,823	33,681
Total assets	469,815	507,389
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	32,167	25,158
Accrued expenses and other current liabilities	41,046	42,236
Total current liabilities	73,213	67,394
Other long-term liabilities	39,793	38,517
Commitments and Contingencies (Note 13)
Stockholders' equity:
Common stock, $0.001 par value; 105,000,000 shares authorized at June 30, 2011 and December 31, 2010; 50,107,982 shares issued and outstanding as of June 30, 2011; and 48,966,696 shares issued and outstanding as of December 31, 2010	50	49
Additional paid-in capital	868,776	857,154
Accumulated other comprehensive income	995	1,467
Accumulated deficit	(513,012)	(457,192)
Total stockholders' equity	356,809	401,478
Total liabilities and stockholders' equity	$ 469,815	$ 507,389