Income Taxes (Details Textual) (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Income Taxes (Additional Textual) [Abstract]
Payments of interest related to unrecognized tax benefits	$ 67,000
Ending balance of unrecognized tax benefits	1,027,000	954,000	1,191,000	865,000
Unrecognized tax benefits recognition impact on income tax rate	0
Unrecognized tax benefits in which no material change is expected	1,000,000
Decrease in valuation allowance	87,000	1,600,000	414,000
Federal
Income Taxes (Textual) [Abstract]
Net operating loss	13,900,000
Stock option deduction	600,000
Net operating loss expiration year	2032
R&D Credits	1,200,000
Tax credit carryforward expiration year	2026
State
Income Taxes (Textual) [Abstract]
Net operating loss	14,100,000
Stock option deduction	400,000
Net operating loss expiration year	2020
R&D Credits	$ 1,700,000