Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Jan. 01, 2011
Current assets:
Cash and cash equivalents	$ 97,699	$ 66,460
Accounts receivable, net of allowances of $117 and $63, respectively	29,289	44,523
Inventories	52,260	43,168
Inventories - delivered systems	1,637	1,466
Prepaid expenses and other	8,119	2,986
Deferred income taxes	12,406	9,644
Total current assets	201,410	168,247
Property, plant and equipment, net	35,521	35,186
Goodwill	11,990	0
Intangible assets, net	14,394	5,972
Deferred income tax assets - long term	2,864	9,256
Other assets	1,042	1,235
Total assets	267,221	219,896
Current liabilities:
Accounts payable	7,975	11,486
Accrued payroll and related expenses	8,837	8,813
Deferred revenue	5,788	4,063
Other current liabilities	16,709	7,293
Income taxes payable	707	250
Current portion of debt obligations	765	572
Total current liabilities	40,781	32,477
Deferred revenue	4,547	3,191
Income taxes payable	2,401	0
Other long-term liabilities	2,813	3,912
Debt obligations	6,687	9,467
Total liabilities	57,229	49,047
Stockholders’ equity:
Preferred stock, $0.001 par value; 3,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.001 par value per share; 47,000,000 shares authorized; 23,182,771 and 22,314,783 respectively, issued and outstanding	23	22
Additional paid-in capital	236,735	225,755
Accumulated deficit	(28,315)	(57,000)
Accumulated other comprehensive income	1,549	2,072
Total stockholders’ equity	209,992	170,849
Total liabilities and stockholders’ equity	$ 267,221	$ 219,896