Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012
Current Assets:
Cash and cash equivalents	$ 32,294	$ 74,463
Accounts receivable, net of allowance for doubtful accounts of $156 and $125 as of March 30, 2013 and December 29,2012, respectively	30,264	31,479
Inventories	51,711	44,361
Prepaid expenses and other assets	12,570	6,628
Deferred income taxes	5,411	5,411
Total current assets	132,250	162,342
Property, plant and equipment, net	205,871	189,948
Other assets	4,668	4,656
Goodwill	2,538	2,538
Total assets	345,327	359,484
Current Liabilities:
Accounts payable	27,673	28,303
Current portion of long-term debt and capital lease obligations	53	62
Accrued expenses and other current liabilities	47,045	60,529
Total current liabilities	74,771	88,894
Deferred income taxes	20,255	20,463
Debt and capital lease obligations, less current portion	744	566
Other liabilities	3,960	4,470
Total liabilities	99,730	114,393
Commitments and Contingencies
Stockholders' Equity:
Additional paid-in capital	165,595	157,305
Accumulated other comprehensive loss, net of tax	(883)	(883)
Retained earnings	80,757	88,541
Total stockholders' equity	245,597	245,091
Total liabilities and stockholders' equity	345,327	359,484
Common Class A
Stockholders' Equity:
Common Stock	88	87
Common Class B
Stockholders' Equity:
Common Stock	$ 40	$ 41