CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 191,004	$ 214,853
Accounts receivable, net of allowances of $1,256 and $1,255 at March 31, 2014 and December 31, 2013, respectively	51,016	52,810
Inventories, net	48,707	46,288
Deferred tax assets	11,191	12,371
Prepaid expenses and other current assets	6,411	6,056
Total current assets	308,329	332,378
Property and equipment, net	54,012	51,244
Intangible assets, net	14,066	14,581
Goodwill	166,091	165,953
Deferred tax assets	24,737	25,842
Other assets	4,190	4,143
Total assets	571,425	594,141
Current liabilities:
Accounts payable	17,305	18,325
Accrued liabilities	33,881	64,948
Income tax payable	1,022	1,372
Other liabilities	275	353
Total current liabilities	52,483	84,998
Deferred tax liabilities	249	249
Other non-current liabilities	20,559	21,305
Total liabilities	73,291	106,552
Commitments and contingencies (Notes 6 and 7)
Series A 3% Redeemable Convertible Preferred Stock, par value $0.001; Authorized: 100 shares; Issued: 0 and 75 shares at March 31, 2014 and December 31, 2013, respectively; Outstanding: 0 and 75 shares at March 31, 2014 and December 31, 2013, respectively; Redemption value: $0 and $87,089 at March 31, 2014 and December 31, 2013, respectively	0	84,494
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: 38,408 and 32,385 shares Outstanding: 34,489 and 28,466 shares at March 31, 2014 and December 31, 2013, respectively	34	28
Treasury stock: 3,919 shares at March 31, 2014 and December 31, 2013	(105,798)	(105,798)
Additional paid-in capital	520,916	429,979
Accumulated other comprehensive income	5,590	5,121
Retained earnings	77,392	73,765
Total stockholders’ equity	498,134	403,095
Total liabilities, redeemable convertible preferred stock and stockholders’ equity	$ 571,425	$ 594,141