Annual report pursuant to Section 13 and 15(d)

Business Acquisition (Details Textual)

v3.20.4
Business Acquisition (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Nov. 06, 2020
Jan. 02, 2021
Sep. 26, 2020
Jun. 27, 2020
Mar. 28, 2020
Dec. 28, 2019
Sep. 28, 2019
Jun. 29, 2019
Mar. 30, 2019
Jan. 02, 2021
Dec. 28, 2019
Dec. 29, 2018
Business Acquisition [Line Items]                        
Net sales   $ 151,618 $ 122,645 $ 119,294 $ 129,483 $ 125,927 $ 138,045 $ 143,842 $ 146,851 $ 523,040 $ 554,665 $ 508,045
Business acquisition, transaction costs   $ 6,644               6,644    
Balboa [Member]                        
Business Acquisition [Line Items]                        
Business acquisition, date of acquisition Nov. 06, 2020                      
Business acquisition of outstanding equity interest perceentage 100.00%                      
Cash consideration transferred $ 223,158                      
Estimated fair value of contingent liability 1,919                      
Goodwill expected to be deductible for tax purposes $ 6,436                      
Acquisition-related costs (included in selling, engineering, and administrative expenses)                   6,644    
Net sales                   26,057    
Income (loss) before income taxes                   1,547    
Charges related to purchase accounting effects of inventory                   1,874 1,874  
Amortization of Acquisition-related intangible assets                   $ 4,041    
Business acquisition, transaction costs           $ 7,239         7,239  
Business acquisition, other acquisition related costs                     1,683  
Business acquisition, other non-recurring costs                     1,471  
Business acquisition, amortization of sales order backlog intangible asset                     $ 8,000