Condensed Consolidated Balance Sheets (USD $) In Thousands	Oct. 01, 2011	Jan. 01, 2011
Current assets:
Cash and cash equivalents	$ 100,149	$ 66,460
Accounts receivable, net of allowances of $156 and $63, respectively	45,183	44,523
Inventories	51,353	43,168
Inventories - delivered systems	1,943	1,466
Prepaid expenses and other	3,514	2,986
Deferred income tax assets	10,751	9,644
Total current assets	212,893	168,247
Property, plant and equipment, net	35,329	35,186
Intangible assets, net	4,836	5,972
Deferred income tax assets, non-current	5,960	9,256
Other assets	1,091	1,235
Total assets	260,109	219,896
Current liabilities:
Accounts payable	11,924	11,486
Accrued payroll and related expenses	9,501	8,813
Deferred revenue	5,102	4,063
Other current liabilities	8,939	7,293
Income taxes payable	0	250
Current portion of debt obligations	748	572
Total current liabilities	36,214	32,477
Deferred revenue, non-current	5,468	3,191
Other non-current liabilities	5,228	3,912
Debt obligations, net of current portion	6,885	9,467
Total liabilities	53,795	49,047
Commitments and contingencies (Note 15)
Stockholders’ equity:
Preferred stock, $0.001 par value; 3,000 shares authorized; no shares issued or outstanding
Common stock, $0.001 par value, 47,000 shares authorized; 22,951 and 22,315, respectively, issued and outstanding	23	22
Additional paid-in capital	231,413	225,755
Accumulated deficit	(27,784)	(57,000)
Accumulated other comprehensive income	2,662	2,072
Total stockholders’ equity	206,314	170,849
Total liabilities and stockholders’ equity	$ 260,109	$ 219,896