CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 214,853	$ 218,787
Accounts receivable, net of allowances of $1,255 and $1,565 at 2013 and 2012, respectively	52,810	48,881
Inventories, net	46,288	48,417
Deferred tax assets	12,371	20,090
Prepaid expenses and other current assets	6,056	6,022
Total current assets	332,378	342,197
Property and equipment, net	51,244	30,461
Intangible assets, net	14,581	1,859
Goodwill	165,953	119,893
Deferred tax assets	25,842	23,206
Other assets	4,143	2,171
Total assets	594,141	519,787
Current liabilities:
Accounts payable	18,325	12,189
Accrued liabilities	64,948	41,674
Deferred tax liabilities	3	33
Deferred revenue	350	285
Income tax payable	1,372	286
Total current liabilities	84,998	54,467
Deferred tax liabilities	249	354
Other non-current liabilities	21,305	20,200
Total liabilities	106,552	75,021
Commitments and contingencies (Notes 9 and 10)
Series A 3% Redeemable Convertible Preferred Stock, par value $0.001; Authorized: 100 shares; Issued and outstanding: 75 shares at December 31, 2013 and 2012, respectively. Redemption value: $87,089	84,494	80,759
Stockholders' equity:
Preferred stock, par value $0.001; Authorized: 4,900 shares; Issued and outstanding: none	0	0
Common stock, par value, $0.001: Authorized: 75,000 shares; Issued: 32,385 and 31,949; Outstanding: 28,466 and 27,977 shares at December 31, 2013 and 2012, respectively	28	28
Treasury stock: 3,919 and 3,942 shares at December 31, 2013 and 2012, respectively	(105,798)	(106,425)
Additional paid-in capital	429,979	413,660
Accumulated other comprehensive income	5,121	5,300
Retained earnings	73,765	51,444
Total stockholders' equity	403,095	364,007
Total liabilities, redeemable convertible preferred stock and stockholders' equity	$ 594,141	$ 519,787