Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions (Details Textual)

v3.10.0.1
Related Party Transactions (Details Textual)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
USD ($)
Jul. 01, 2017
USD ($)
Jun. 30, 2018
USD ($)
Officer
Jul. 01, 2017
USD ($)
Related Party Transaction [Line Items]        
Net sales $ 136,168 $ 89,335 $ 233,486 $ 170,688
Enovation Controls [Member]        
Related Party Transaction [Line Items]        
Due from entity 194 786 194 786
Due to entity $ 731 $ 915 $ 731 915
Enovation Controls [Member] | Inventory Transactions [Member]        
Related Party Transaction [Line Items]        
Number of officers purchasing and selling inventory | Officer     1  
Total sales to entity     $ 1,525 1,299
Total purchases from entity/related party     1,751 5,805
Enovation Controls [Member] | 'Transition Services Agreement [Member]        
Related Party Transaction [Line Items]        
Total purchases from entity/related party     $ 22 856
Maximum transition services period for specified services     1 year  
Enovation Controls [Member] | 'Transition Services Agreement [Member] | Miscellaneous Expense, Net [Member]        
Related Party Transaction [Line Items]        
Net sales     $ 39 1,217
Related costs incurred     $ 39 $ 968