v2.4.0.8
Sale of Makena - Additional Information (Detail) (USD $)
 1 Months Ended 3 Months Ended 12 Months Ended
Feb. 03, 2011
Jan. 16, 2008
Dec. 29, 2012
Mar. 24, 2012
Mar. 24, 2011
Sep. 28, 2013
Sep. 29, 2012
Sep. 24, 2011
Sale Of Intellectual Property [Line Items]                
Transaction price of sale of intellectual property assets   $ 82,000,000            
Amended transaction price as a result of executing amendment           199,500,000    
Amount received upon FDA approval 12,500,000              
Gain on net of certain contingent legal fees and amounts due to inventor     53,900,000   84,500,000 53,884,000 12,424,000 84,502,000
Scheduled amounts received       12,500,000        
Additional amounts to be received under the amended agreement           95,000,000    
Royalty on sales due 5.00%              
Final payment received           60,000,000    
Previously Received [Member] | Parent Company/Issuer [Member]
                
Sale Of Intellectual Property [Line Items]                
Transaction price amounts received $ 79,500,000              
Minimum [Member]
                
Sale Of Intellectual Property [Line Items]                
Period sales price is due from FDA approval, months           18    
Maximum [Member]
                
Sale Of Intellectual Property [Line Items]                
Period sales price is due from FDA approval, months           30