Annual report pursuant to Section 13 and 15(d)

Long Term Debt - Amendment of Credit Agreement (Detail)

v3.10.0.1
Long Term Debt - Amendment of Credit Agreement (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 29, 2018
Nov. 28, 2017
Jun. 16, 2017
Dec. 15, 2016
Jun. 13, 2016
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]                
Debt Issue Cost Paid $ 4,962 [1] $ 330 [1] $ 521 [1] $ 2,446 [1] $ 783 [1] $ 28,700 $ 29,815  
Loss on Debt Amendment $ 1,484 [2] $ 331 [2] $ 190 [2] $ 161 [2] $ 249 [2] $ 1,484 $ 521 $ 13,445
Amended Credit Agreement June 13, 2016                
Debt Instrument [Line Items]                
Nature of Amendment           Reduced term loan interest rate by 0.25%    
Amended Credit Agreement December 15, 2016                
Debt Instrument [Line Items]                
Nature of Amendment           Reduced term loan interest rate by 0.50%    
Amended Credit Agreement June 16, 2017                
Debt Instrument [Line Items]                
Nature of Amendment           Reduced term loan interest rate by 0.25%; modified certain definitions and other provisions in the Credit Agreement    
Amended Credit Agreement November 28, 2017                
Debt Instrument [Line Items]                
Nature of Amendment           Extended maturity of revolving credit line to December 2022; reduced the interest rate applicable to borrowings under the credit line    
Amended Credit Agreement March 29, 2018                
Debt Instrument [Line Items]                
Nature of Amendment           Extended maturity of term loan to March 2025; reduced term loan interest rate by 0.25%; reduced real property mortgage requirements    
[1] Reflected as a reduction of long term debt on the consolidated balance sheet.
[2] Reflected as a loss on debt amendments and refinancing on the consolidated statement of income for the year in which the amendments were effective.