Note 5. INDEBTEDNESS (Details) (USD $)	3 Months Ended
	Mar. 28, 2014	Mar. 29, 2013	Feb. 19, 2014	Feb. 17, 2013	Oct. 04, 2011	Sep. 27, 2013 PBLoanAmountOutstanding	Dec. 31, 2012 PBLoanAmountOutstanding
Note 5. INDEBTEDNESS (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 3,000,000	$ 1,500,000
Notes Payable, Noncurrent	109,000				24,600,000
Line of Credit Facility, Amount Outstanding						22,500,000	7,700,000
Line of Credit Facility, Interest Rate at Period End			0.50%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.25%
Interest Expense, Borrowings	$ 161,000	$ 48,000