Quarterly report pursuant to Section 13 or 15(d)

Organization, Consolidation, And Basis Of Presentation (Cumulative Effect Of The Changes To Financial Statement) (Details)

v3.8.0.1
Organization, Consolidation, And Basis Of Presentation (Cumulative Effect Of The Changes To Financial Statement) (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Line Items]    
Inventories $ 68,128 $ 62,918
Prepaid expenses and other current assets 31,801 30,110
Other current liabilities 113,687 129,396
Retained earnings $ 315,672 288,070
Scenario, Adjustment [Member]    
Organization, Consolidation and Presentation of Financial Statements [Line Items]    
Inventories   (350)
Prepaid expenses and other current assets   (1,147)
Other current liabilities   (2,491)
Retained earnings   994
Restatement Adjustment [Member]    
Organization, Consolidation and Presentation of Financial Statements [Line Items]    
Inventories   62,568
Prepaid expenses and other current assets   28,963
Other current liabilities   126,905
Retained earnings   $ 289,064