Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jan. 03, 2014	Dec. 28, 2012
Accounts receivable, allowance for contract losses and doubtful accounts	$ 2,771	$ 2,666
Preferred stock, par value	$ 0.001	$ 0.001
Preferred Stock, Shares Authorized	5,000	5,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000	100,000
Common stock, shares issued	16,427	16,427
Treasury stock, shares	3,363	3,221