Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets (Details Textual)

v3.6.0.2
Goodwill and Intangible Assets (Details Textual) - USD ($)
9 Months Ended 12 Months Ended
Oct. 01, 2016
Dec. 31, 2016
Jan. 02, 2016
Dec. 27, 2014
Finite-Lived Intangible Assets [Line Items]        
Amortization expense   $ 1,545,000 $ 385,000 $ 276,000
Licensing Agreements [Member]        
Finite-Lived Intangible Assets [Line Items]        
Finite-lived Intangible Asset Acquired   850,000 $ 1,425,000 $ 1,075,000
Subsidiaries [Member]        
Finite-Lived Intangible Assets [Line Items]        
Impairment of carrying value of goodwill   0    
HCT [Member]        
Finite-Lived Intangible Assets [Line Items]        
Impairment of carrying value of goodwill $ 0 0    
Enovation Controls [Member]        
Finite-Lived Intangible Assets [Line Items]        
Impairment of carrying value of goodwill   0    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles, Preliminary Value   $ 108,070,000