Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets (Details Textual)

v3.8.0.1
Goodwill and Intangible Assets (Details Textual) - USD ($)
12 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Finite-Lived Intangible Assets [Line Items]      
Amortization expense $ 8,423,000 $ 1,545,000 $ 385,000
Hydraulics [Member]      
Finite-Lived Intangible Assets [Line Items]      
Impairment of carrying value of goodwill 0    
Electronics [Member]      
Finite-Lived Intangible Assets [Line Items]      
Impairment of carrying value of goodwill $ 0