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Fair Value Measurements - Narrative (Details) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 25, 2021 USD ($) | Sep. 26, 2020 USD ($) | Dec. 26, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Change in fair value of contingent consideration | $ (1,110) | $ (1,300) |
Measurement Input, Price Volatility | Valuation Technique, Option Pricing Model |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Warrants, measurement input | 0.35 |  |
Measurement Input, Risk Free Interest Rate | Valuation Technique, Option Pricing Model |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Warrants, measurement input | 0.0093 |  |
6.375% Senior Notes |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt instrument, stated rate | 6.375% |  |
Instafob |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Change in fair value of contingent consideration | $ (418) |  |
Resharp |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Change in fair value of contingent consideration | (692) |  |
Other accrued expenses | Instafob |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Contingent consideration, current | 472 |  | $ 417
Other non-current liabilities | Resharp |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Contingent consideration, non-current | $ 12,589 |  | $ 13,780

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