CONSOLIDATED BALANCE SHEETS (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 25,374	$ 24,614
Marketable securities	8,956	10,232
Accounts receivable, net	25,939	26,544
Inventories	15,358	14,004
Prepaid expenses and other current assets	3,863	2,916
Total current assets	79,490	78,310
Property and equipment, net	9,810	9,765
Intangible assets, net	23,853	27,797
Goodwill	27,958	27,958
Other assets	631	592
Total assets	141,742	144,422
Current liabilities:
Accounts payable	9,267	6,820
Accrued compensation	7,411	8,830
Other accrued liabilities	10,558	11,160
Deferred revenue and customer deposits	13,099	13,503
Current portion of accrued restructuring	1,764	2,091
Total current liabilities	42,099	42,404
Noncurrent portion of accrued restructuring	2,839	1,839
Other noncurrent liabilities	7,691	8,360
Deferred tax liability	1,131	1,131
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.001 par value; 5,000,000 shares authorized, no shares issued and outstanding
Common stock, $0.001 par value; 100,000,000 shares authorized, 52,775,121 and 52,064,675 shares issued and outstanding in 2011 and 2010, respectively	53	52
Additional paid-in capital	399,588	396,609
Accumulated deficit	(312,195)	(306,361)
Accumulated other comprehensive income	536	388
Total stockholders' equity	87,982	90,688
Total liabilities and stockholders' equity	$ 141,742	$ 144,422