Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions (Details Textual)

v3.10.0.1
Related Party Transactions (Details Textual) - Enovation Controls [Member]
$ in Thousands
9 Months Ended
Sep. 29, 2018
USD ($)
Officer
Sep. 30, 2017
USD ($)
Related Party Transaction [Line Items]    
Due from entity $ 171 $ 525
Due to entity $ 1,146 565
Inventory Transactions [Member]    
Related Party Transaction [Line Items]    
Number of officers purchasing and selling inventory | Officer 1  
Total sales to entity $ 2,080 1,869
Total purchases from entity/related party 5,184 8,973
Transition Services Agreement [Member]    
Related Party Transaction [Line Items]    
Total purchases from entity/related party $ 22 1,122
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 $ 1,606