Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 30, 2022	Dec. 31, 2021	Dec. 25, 2020
Operating Loss Carryforwards [Line Items]
Valuation allowance		$ (15,044,000)	$ (15,658,000)
Proceeds from sale of subsidiary treasury stock			1,104,000
Gain (loss) on sale of previously unissued stock by subsidiary			35,039,000
Unrecognized tax benefits (expense)		161,000	(187,000)
Future reduction resulting from lapse of applicable statute of limitations		$ 76,000	$ 55,000
Forecast
Operating Loss Carryforwards [Line Items]
Future reduction resulting from lapse of applicable statute of limitations	$ 85,000