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Acquisition and Divestitures - ProCol Biologic Graft - Additional Information (Detail) - USD ($)
$ in Millions
9 Months Ended
Mar. 18, 2016
Sep. 30, 2017
Mar. 31, 2017
Sep. 30, 2016
Business Acquisition [Line Items]        
Weighted average useful life   9 years 1 month 6 days    
ProCol Biologic Graft [Member]        
Business Acquisition [Line Items]        
Purchase price for acquisition of assets and rights $ 2.7      
Business combination, finished goods inventory and other related assets acquired 2.0      
Business combination, other assets acquired $ 0.7      
Business combination consideration calculated, percentage of revenues 10.00%      
Additional consideration initial value $ 0.3      
Payment made for assets purchased, percentage 50.00%   25.00% 25.00%
Maximum goodwill deductible for tax purposes 15 years      
Weighted average useful life   8 years 7 months 6 days