CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, unless otherwise specified	Jun. 28, 2014	Dec. 28, 2013
Statement of Financial Position [Abstract]
Accounts receivable, allowance	$ 43	$ 27
Inventories, reserves	227	175
Common Stock, shares authorized (in shares)	10,000	10,000
Common Stock, issued shares (in shares)	5,581	5,571
Common Stock, outstanding shares (in shares)	5,581	5,571
Assets of the consolidated variable interest entity	10,242	9,949
Liabilities of the consolidated variable interest entity	$ 2,211	$ 1,874