Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)	Jun. 25, 2022	Dec. 25, 2021
Statement of Financial Position [Abstract]
Accounts receivable, allowance	$ 136,000	$ 150,000
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	3,000	3,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares, issued	93,627,360	92,146,761
Common stock, shares, outstanding	91,802,637	89,988,528
Treasury stock, shares		80,641