Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012
Current assets:
Cash and cash equivalents	$ 84,815	$ 87,915
Marketable debt securities – current	57,856	51,264
Accounts receivable, net of allowance for doubtful accounts of $455 and $348, respectively	14,526	16,613
Inventories	30,973	35,564
Prepaid expenses	7,035	4,299
Deferred income taxes	5,403	5,401
Other current assets	8,466	9,522
Total current assets	209,074	210,578
Non-current assets:
Marketable debt securities – non-current	38,700	38,642
Property and equipment, net	91,362	79,356
Goodwill and intangible assets, net	17,552	2,881
Deferred income taxes	7,928	8,511
Other assets	2,973	2,053
Total assets	367,589	342,021
Current liabilities:
Accounts payable	80,084	67,703
Customer prepayments	17,489	15,194
Compensation and benefits	11,965	21,597
Taxes and withholding	14,735	9,282
Other current liabilities	17,097	19,285
Total current liabilities	141,370	133,061
Non-current liabilities:
Warranty liabilities	1,641	1,457
Other long-term liabilities	14,209	13,806
Total liabilities	157,220	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, 55,650 and 55,903 shares issued and outstanding, respectively	556	559
Additional paid-in capital	27,134	33,923
Retained earnings	182,666	159,195
Accumulated other comprehensive income	13	20
Total shareholders’ equity	210,369	193,697
Total liabilities and shareholders’ equity	$ 367,589	$ 342,021