Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 29, 2014	Dec. 28, 2013
Current assets:
Cash and cash equivalents	$ 60,409	$ 58,223
Marketable debt securities – current	52,147	52,159
Accounts receivable, net of allowance for doubtful accounts of $418 and $425, respectively	15,579	14,979
Inventories	44,590	40,152
Prepaid expenses	7,923	9,216
Deferred income taxes	6,926	6,936
Other current assets	8,613	7,874
Total current assets	196,187	189,539
Non-current assets:
Marketable debt securities – non-current	30,469	34,632
Property and equipment, net	137,567	129,542
Goodwill and intangible assets, net	16,613	16,823
Deferred income taxes	6,396	4,943
Other assets	6,229	6,286
Total assets	393,461	381,765
Current liabilities:
Accounts payable	63,385	73,391
Customer prepayments	20,177	15,392
Accrued sales returns	10,737	9,433
Compensation and benefits	19,493	15,242
Taxes and withholding	16,514	12,517
Other current liabilities	10,410	11,207
Total current liabilities	140,716	137,182
Non-current liabilities:
Warranty liabilities	1,897	1,567
Other long-term liabilities	18,725	17,796
Total liabilities	161,338	156,545
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, 54,273 and 54,901 shares issued and outstanding, respectively	543	549
Additional paid-in capital	0	5,382
Retained earnings	231,557	219,276
Accumulated other comprehensive income	23	13
Total shareholders’ equity	232,123	225,220
Total liabilities and shareholders’ equity	$ 393,461	$ 381,765