Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Details Textual)

v3.8.0.1
Related Party Transactions (Details Textual) - Enovation Controls, LLC [Member]
$ in Thousands
12 Months Ended
Dec. 30, 2017
USD ($)
Officer
Dec. 31, 2016
USD ($)
Related Party Transaction [Line Items]    
Due from entity $ 186 $ 203
Due to entity $ 727 140
Inventory Transactions [Member]    
Related Party Transaction [Line Items]    
Number of officers purchasing and selling inventory | Officer 1  
Total sales to entity $ 2,507 214
Total purchases from entity/related party 11,050 $ 533
Transition Services Agreement [Member]    
Related Party Transaction [Line Items]    
Total purchases from entity/related party $ 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 $ 1,757  
Related costs incurred $ 1,757