Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Details Textual)

v3.10.0.1
Related Party Transactions (Details Textual) - Enovation Controls [Member]
$ in Thousands
12 Months Ended
Dec. 29, 2018
USD ($)
Officer
Dec. 30, 2017
USD ($)
Dec. 31, 2016
USD ($)
Related Party Transaction [Line Items]      
Due from entity $ 296 $ 186  
Due to entity $ 631 727  
Inventory Transactions [Member]      
Related Party Transaction [Line Items]      
Number of officers purchasing and selling inventory | Officer 1    
Total sales to entity $ 2,584 2,507 $ 214
Total purchases from entity/related party 6,178 11,050 $ 533
Transition Services Agreement [Member]      
Related Party Transaction [Line Items]      
Total purchases from entity/related party $ 22 1,160  
Maximum transition services period for specified services 1 year    
Transition Services Agreement [Member] | Miscellaneous Expense, Net [Member]      
Related Party Transaction [Line Items]      
Sales and related costs recognized $ 39 $ 1,757