v3.10.0.1
Fair Value Measurements - Liabilities at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 29, 2018
Dec. 29, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Non-controlling interest subject to put provisions $ 14,188 $ 12,955
Recurring    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Credit facility 60,775 63,058
Non-controlling interest subject to put provisions 14,188 12,955
Total liabilities measured at fair value 74,963 76,013
Recurring | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Credit facility 0 0
Non-controlling interest subject to put provisions 0 0
Total liabilities measured at fair value 0 0
Recurring | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Credit facility 60,775 63,058
Non-controlling interest subject to put provisions 0 0
Total liabilities measured at fair value 60,775 63,058
Recurring | Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Credit facility 0 0
Non-controlling interest subject to put provisions 14,188 12,955
Total liabilities measured at fair value $ 14,188 $ 12,955