Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 29, 2023	Dec. 30, 2022
Statement of Financial Position [Abstract]
Accounts receivable, net of allowance for contract losses and doubtful accounts	$ 5,281	$ 6,193
Preferred stock, par or stated value per share	$ 0.001	$ 0.001
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	120,000,000	120,000,000
Common stock, shares issued	65,707,000	65,707,000
Treasury stock, shares	15,134,000	15,064,000