Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 29, 2013	Dec. 29, 2012
Current assets:
Cash and cash equivalents	$ 58,189	$ 87,915
Marketable debt securities – current	53,787	51,264
Accounts receivable, net of allowance for doubtful accounts of $459 and $348, respectively	14,385	16,613
Inventories	34,473	35,564
Prepaid expenses	9,052	4,299
Deferred income taxes	5,398	5,401
Other current assets	10,904	9,522
Total current assets	186,188	210,578
Non-current assets:
Marketable debt securities – non-current	28,502	38,642
Property and equipment, net	105,539	79,356
Goodwill and intangible assets, net	17,288	2,881
Deferred income taxes	4,470	8,511
Other assets	4,573	2,053
Total assets	346,560	342,021
Current liabilities:
Accounts payable	63,335	67,703
Customer prepayments	12,330	15,194
Compensation and benefits	15,990	21,597
Taxes and withholding	6,134	9,282
Other current liabilities	17,716	19,285
Total current liabilities	115,505	133,061
Non-current liabilities:
Warranty liabilities	1,673	1,457
Other long-term liabilities	15,293	13,806
Total liabilities	132,471	148,324
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, 55,603 and 55,903 shares issued and outstanding, respectively	556	559
Additional paid-in capital	20,966	33,923
Retained earnings	192,592	159,195
Accumulated other comprehensive (loss) income	(25)	20
Total shareholders’ equity	214,089	193,697
Total liabilities and shareholders’ equity	$ 346,560	$ 342,021