Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details Textual)

v3.22.0.1
Summary of Significant Accounting Policies (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 01, 2022
Jan. 02, 2021
Dec. 28, 2019
Summary Of Significant Accounting Policies [Line Items]      
Right-of-use assets $ 22,776 $ 16,616  
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Property Plant And Equipment Right Of Use Assest Net Property Plant And Equipment Right Of Use Assest Net  
Retained earnings $ 363,279 $ 270,320  
Long-lived asset impairment 0    
Contract asset, current 2,201 2,776  
Contract Liabilities, current 4,436 4,208  
Research and development costs charged to expense 16,798 15,557 $ 15,163
Restructuring charges $ 0 0 $ 1,724
Minimum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Finite-lived intangible assets, estimated useful life 5 years    
Maximum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Finite-lived intangible assets, estimated useful life 26 years    
Custom Products [Member] | Minimum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Contract period for sale of product 3 months    
Custom Products [Member] | Maximum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Contract period for sale of product 1 year    
Total Liabilities [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Lease liabilities $ 23,763 $ 17,464