| Schedule of financial information by reportable segment | 
 The following table presents financial information by reportable segment: 
| 
   
 | 
   
 | 
 Three Months Ended 
 | 
   
 | 
   
 | 
 
| 
   
 | 
   
 | 
 April 3, 2021 
 | 
   
 | 
   
 | 
 March 28, 2020 
 | 
   
 | 
   
 | 
 
| 
 Net sales 
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
 
| 
 Hydraulics 
 | 
   
 | 
 $ 
 | 
 119,106 
 | 
   
 | 
   
 | 
 $ 
 | 
 103,818 
 | 
   
 | 
   
 | 
 
| 
 Electronics 
 | 
   
 | 
   
 | 
 85,738 
 | 
   
 | 
   
 | 
   
 | 
 25,665 
 | 
   
 | 
   
 | 
 
| 
 Total 
 | 
   
 | 
 $ 
 | 
 204,844 
 | 
   
 | 
   
 | 
 $ 
 | 
 129,483 
 | 
   
 | 
   
 | 
 
| 
 Operating income 
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
 
| 
 Hydraulics 
 | 
   
 | 
 $ 
 | 
 28,073 
 | 
   
 | 
   
 | 
 $ 
 | 
 21,482 
 | 
   
 | 
   
 | 
 
| 
 Electronics 
 | 
   
 | 
   
 | 
 18,280 
 | 
   
 | 
   
 | 
   
 | 
 4,778 
 | 
   
 | 
   
 | 
 
| 
 Corporate and other 
 | 
   
 | 
   
 | 
 (11,745 
 | 
 ) 
 | 
   
 | 
   
 | 
 (36,293 
 | 
 ) 
 | 
   
 | 
 
| 
 Total 
 | 
   
 | 
 $ 
 | 
 34,608 
 | 
   
 | 
   
 | 
 $ 
 | 
 (10,033 
 | 
 ) 
 | 
   
 | 
 
| 
 Capital expenditures 
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
 
| 
 Hydraulics 
 | 
   
 | 
 $ 
 | 
 2,635 
 | 
   
 | 
   
 | 
 $ 
 | 
 2,394 
 | 
   
 | 
   
 | 
 
| 
 Electronics 
 | 
   
 | 
   
 | 
 2,401 
 | 
   
 | 
   
 | 
   
 | 
 543 
 | 
   
 | 
   
 | 
 
| 
 Total 
 | 
   
 | 
 $ 
 | 
 5,036 
 | 
   
 | 
   
 | 
 $ 
 | 
 2,937 
 | 
   
 | 
   
 | 
 
 
 
  
| 
   
 | 
   
 | 
 April 3, 2021 
 | 
   
 | 
   
 | 
 January 2, 2021 
 | 
   
 | 
 
| 
 Total assets 
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
 
| 
 Hydraulics 
 | 
   
 | 
 $ 
 | 
 762,063 
 | 
   
 | 
   
 | 
 $ 
 | 
 765,155 
 | 
   
 | 
 
| 
 Electronics 
 | 
   
 | 
   
 | 
 541,834 
 | 
   
 | 
   
 | 
   
 | 
 523,502 
 | 
   
 | 
 
| 
 Corporate 
 | 
   
 | 
   
 | 
 7,651 
 | 
   
 | 
   
 | 
   
 | 
 8,322 
 | 
   
 | 
 
| 
 Total 
 | 
   
 | 
 $ 
 | 
 1,311,548 
 | 
   
 | 
   
 | 
 $ 
 | 
 1,296,979 
 | 
   
 | 
 
 
 
 | 
| Schedule of geographic region information | 
Tangible long-lived assets are shown based on the physical location of the assets and primarily include net property, plant and equipment and exclude right-of-use assets.
   
| 
   
 | 
   
 | 
 Three Months Ended 
 | 
   
 | 
   
 | 
 
| 
   
 | 
   
 | 
 April 3, 2021 
 | 
   
 | 
   
 | 
 March 28, 2020 
 | 
   
 | 
   
 | 
 
| 
 Net sales 
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
 
| 
 Americas 
 | 
   
 | 
 $ 
 | 
 99,341 
 | 
   
 | 
   
 | 
 $ 
 | 
 58,950 
 | 
   
 | 
   
 | 
 
| 
 EMEA 
 | 
   
 | 
   
 | 
 52,602 
 | 
   
 | 
   
 | 
   
 | 
 35,971 
 | 
   
 | 
   
 | 
 
| 
 APAC 
 | 
   
 | 
   
 | 
 52,901 
 | 
   
 | 
   
 | 
   
 | 
 34,562 
 | 
   
 | 
   
 | 
 
| 
 Total 
 | 
   
 | 
 $ 
 | 
 204,844 
 | 
   
 | 
   
 | 
 $ 
 | 
 129,483 
 | 
   
 | 
   
 | 
 
 
 
  
  
| 
   
 | 
   
 | 
 April 3, 2021 
 | 
   
 | 
   
 | 
 January 2, 2021 
 | 
   
 | 
 
| 
 Tangible long-lived assets 
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
 
| 
 Americas 
 | 
   
 | 
 $ 
 | 
 96,888 
 | 
   
 | 
   
 | 
 $ 
 | 
 96,752 
 | 
   
 | 
 
| 
 EMEA 
 | 
   
 | 
   
 | 
 30,183 
 | 
   
 | 
   
 | 
   
 | 
 31,091 
 | 
   
 | 
 
| 
 APAC 
 | 
   
 | 
   
 | 
 18,112 
 | 
   
 | 
   
 | 
   
 | 
 18,718 
 | 
   
 | 
 
| 
 Total 
 | 
   
 | 
 $ 
 | 
 145,183 
 | 
   
 | 
   
 | 
 $ 
 | 
 146,561 
 | 
   
 | 
 
 
 
 |