Revenue from Contracts with Customers (Narrative) (Details) - USD ($) |
3 Months Ended | |||
---|---|---|---|---|
Mar. 28, 2024 |
Mar. 30, 2023 |
Dec. 28, 2023 |
Dec. 29, 2022 |
|
Revenue from Contract with Customer [Abstract] | ||||
Noncancelable Long Term Contracts | $ 0 | |||
Unbilled accounts receivable | 1,600,000 | $ 3,500,000 | ||
Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized | 6.7 | |||
National advertising revenue | ||||
Allowance for credit losses | 100,000 | 300,000 | $ 100,000 | $ 300,000 |
Accounts Receivable, Credit Loss Expense (Reversal) | 0 | 0 | ||
Accounts Receivable, Allowance for Credit Loss, Writeoff | 0 | 0 | ||
Local And Regional Advertising Revenue [Member] | ||||
Allowance for credit losses | 1,200,000 | 1,400,000 | $ 1,300,000 | $ 1,400,000 |
Accounts Receivable, Credit Loss Expense (Reversal) | (100,000) | 0 | ||
Accounts Receivable, Allowance for Credit Loss, Writeoff | $ 0 | $ 0 |