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Deferred Revenue and Other Contract-Related Liabilities - Changes in Deferred Revenue - (Details)
$ in Thousands
12 Months Ended
Dec. 29, 2018
USD ($)
Revenue Recognition and Deferred Revenue [Abstract]  
Deferred revenue, beginning of the period $ 11,589
Revenue deferred during the period 11,356
Recognition of revenue deferred in prior periods $ (12,062)