XML 99 R84.htm IDEA: XBRL DOCUMENT v3.10.0.1
Retirement Plans (Details)
$ in Thousands
12 Months Ended
Dec. 30, 2018
USD ($)
Rate
Dec. 31, 2017
USD ($)
Jan. 01, 2017
USD ($)
Defined Contribution Plan Disclosure [Line Items]      
Defined Contribution Plan, Employer Matching Contribution, Percent | Rate 50.00%    
Defined Contribution Plan, Requisite Service Period, Hours of Service 1,000    
Defined Contribution Plan, Cost $ 676 $ 615 $ 496
Deferred Compensation Arrangements, Interest Rate | Rate 8.00%    
Deferred Compensation Arrangement with Individual, Contributions by Employer $ 0    
Deferred compensation $ 3,610 $ 3,053  
Minimum [Member]      
Defined Contribution Plan Disclosure [Line Items]      
Defined Contribution Plan, Vesting Period of Company Contributions 1 year    
Maximum [Member]      
Defined Contribution Plan Disclosure [Line Items]      
Defined Contribution Plan, Vesting Period of Company Contributions 5 years