Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Jan. 01, 2011
Current assets:
Cash and cash equivalents	$ 116,255	$ 76,016
Marketable debt securities - current	20,020	0
Accounts receivable, net of allowance for doubtful accounts of $397 and $302, respectively	13,844	9,909
Inventories	24,851	19,647
Prepaid expenses	5,778	6,388
Deferred income taxes	4,443	4,297
Other current assets	6,004	652
Total current assets	191,195	116,909
Non-current assets:
Marketable debt securities - non-current	10,042	0
Property and equipment, net	43,850	32,953
Deferred income taxes	12,964	15,965
Other assets	4,606	4,130
Total assets	262,657	169,957
Current liabilities:
Accounts payable	50,141	42,025
Customer prepayments	13,529	12,944
Compensation and benefits	29,806	24,857
Taxes and withholding	9,883	5,359
Other current liabilities	15,691	11,671
Total current liabilities	119,050	96,856
Non-current liabilities:
Warranty liabilities	2,714	2,815
Other long-term liabilities	11,502	12,309
Total liabilities	133,266	111,980
Shareholders' equity:
Undesignated preferred stock; 5,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $0.01 par value; 142,500 shares authorized, 56,397 and 55,455 shares issued and outstanding, respectively	564	555
Additional paid-in capital	47,701	36,799
Retained earnings	81,101	20,623
Accumulated other comprehensive income	25	0
Total shareholders' equity	129,391	57,977
Total liabilities and shareholders' equity	$ 262,657	$ 169,957