Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 27, 2014	Dec. 28, 2013
Current assets:
Cash and cash equivalents	$ 78,426	$ 58,223
Marketable debt securities – current	55,317	52,159
Accounts receivable, net of allowance for doubtful accounts of $641 and $425, respectively	29,154	14,979
Inventories	48,704	40,152
Prepaid expenses	9,250	9,216
Deferred income taxes	6,939	6,936
Other current assets	10,254	7,874
Total current assets	238,044	189,539
Non-current assets:
Marketable debt securities – non-current	43,376	34,632
Property and equipment, net	159,475	129,542
Goodwill and intangible assets, net	16,194	16,823
Deferred income taxes	9,249	4,943
Other assets	8,513	6,286
Total assets	474,851	381,765
Current liabilities:
Accounts payable	85,597	73,391
Customer prepayments	29,239	15,392
Accrued sales returns	14,406	9,433
Compensation and benefits	29,023	15,242
Taxes and withholding	26,540	12,517
Other current liabilities	15,579	11,207
Total current liabilities	200,384	137,182
Non-current liabilities:
Warranty liabilities	2,253	1,567
Other long-term liabilities	23,182	17,796
Total liabilities	225,819	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, 53,289 and 54,901 shares issued and outstanding, respectively	533	549
Additional paid-in capital	0	5,382
Retained earnings	248,491	219,276
Accumulated other comprehensive income	8	13
Total shareholders’ equity	249,032	225,220
Total liabilities and shareholders’ equity	$ 474,851	$ 381,765