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Goodwill and Identifiable Intangible Assets, Net - Additional information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Sep. 30, 2017
Sep. 30, 2017
Goodwill And Other Intangible Assets        
Goodwill impairment     $ 33.6 $ 33.6
RANA        
Goodwill And Other Intangible Assets        
Goodwill impairment     33.6 $ 33.6
RAEU        
Goodwill And Other Intangible Assets        
Goodwill impairment     $ 0.0  
Discounted cash flow        
Goodwill And Other Intangible Assets        
Percentage weight given to the valuation technique input in the determination of the fair value 50.00%      
Long-term growth rate 3.00%      
Discounted cash flow | Minimum        
Goodwill And Other Intangible Assets        
Weighted average cost of capital 11.00% 10.00%    
Discounted cash flow | Maximum        
Goodwill And Other Intangible Assets        
Weighted average cost of capital 11.50% 10.50%    
Guideline public company        
Goodwill And Other Intangible Assets        
Percentage weight given to the valuation technique input in the determination of the fair value 50.00%