CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 251,036	$ 218,787
Accounts receivable, net of allowances of $1,396 and $1,565 at June 30, 2013 and December 31, 2012, respectively	42,241	48,881
Inventories, net	42,560	48,417
Deferred tax assets	16,502	20,090
Prepaid expenses and other current assets	7,103	6,022
Total current assets	359,442	342,197
Property and equipment, net	33,190	30,461
Intangible assets, net	11,728	1,859
Goodwill	119,330	119,893
Deferred tax assets	14,786	23,206
Other assets	422	2,171
Total assets	538,898	519,787
Current liabilities:
Accounts payable	13,491	12,189
Accrued liabilities	59,224	41,674
Income tax payable	3,298	286
Other liabilities	354	318
Total current liabilities	76,367	54,467
Deferred tax liabilities	354	354
Other non-current liabilities	6,221	20,200
Total liabilities	82,942	75,021
Commitments and contingencies (Notes 6 and 7)
Series A 3% Redeemable Convertible Preferred Stock, par value $0.001; Authorized: 100 shares; Issued and outstanding: 75 shares at June 30, 2013 and December 31, 2012; Redemption value: $87,089	82,607	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: 32,175 and 31,949 shares Outstanding: 28,244 and 27,977 shares at June 30, 2013 and December 31, 2012, respectively	28	28
Treasury stock: 3,931 and 3,942 shares at June 30, 2013 and December 31, 2012, respectively	(106,126)	(106,425)
Additional paid-in capital	421,587	413,660
Accumulated other comprehensive income	3,857	5,300
Retained earnings	54,003	51,444
Total stockholders' equity	373,349	364,007
Total liabilities, redeemable convertible preferred stock and stockholders' equity	$ 538,898	$ 519,787