Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 27, 2024	Dec. 29, 2023
Statement of Financial Position [Abstract]
Accounts receivable, net of allowance for contract losses and doubtful accounts	$ 6,481	$ 5,281
Property, equipment and leasehold improvements, net of accumulated depreciation and amortization	$ 110,828	$ 104,011
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	14,942,000	15,134,000