XML 99 R85.htm IDEA: XBRL DOCUMENT v3.8.0.1
Retirement Plans (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2017
USD ($)
Rate
Jan. 01, 2017
USD ($)
Jan. 03, 2016
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 Recognized $ 615 $ 496 $ 463
Deferred Compensation Arrangements, Interest Rate | Rate 8.00%    
Deferred Compensation Arrangement with Individual, Employer Contribution $ 0    
Deferred compensation $ 3,053 $ 1,756  
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