v3.19.1
Accrued Liabilities (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Mar. 29, 2019
Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]    
Asset Impairment Charges $ 133  
Accrued Liabilities [Member]    
Restructuring Cost and Reserve [Line Items]    
Accrued restructuring liability - current portion 29,986 $ 28,600
Other Noncurrent Liabilities [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring Reserve, Noncurrent $ 700