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Nature of Operations and Summary of Significant Accounting Policies - Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($)
$ in Thousands
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Accounting Policies [Abstract]        
Cash and cash equivalents $ 45,830 $ 75,425 $ 71,487  
Restricted cash 287 1,421 2,082  
Total Cash, Cash Equivalents, and Restricted Cash $ 46,117 $ 76,846 $ 73,569 $ 66,936