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Revenue Recognition Effect of Adopting ASC 606 (Details) - Cumulative Effect, Period of Adoption, Adjustment - USD ($) $ in Thousands | Dec. 29, 2018 | Dec. 31, 2017
--- | --- | ---
Effect of Adopting ASC 606 [Line Items] |  |  |
Adoption of ASU |  | $ (100) | $ 1,100
Accounting Standards Update 2014-09 |  |  |
Effect of Adopting ASC 606 [Line Items] |  |  |
Adoption of ASU | [1] |  | $ (4,405)
[1] | As of December 31, 2017, the company adopted ASU No. 2014-09, Revenue from Contracts with Customers (ASC 606) using the modified retrospective method to contracts that were not completed as of December 30, 2017. The adoption of this guidance resulted in the recognition of $(4.4) million as an adjustment to the opening balance of retained earnings.

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- Definition [Line Items] for Effect of Adopting ASC 606 [Table] + References No definition available. + Details
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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. 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