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Subsequent Events - Additional Information (Detail) - USD ($)
May. 11, 2016
Apr. 14, 2016
Feb. 17, 2016
Sep. 30, 2010
Subsequent Event [Line Items]        
Purchase share capital of Processa, SAS, percentage       51.00%
Subsequent Events [Member]        
Subsequent Event [Line Items]        
Cash dividend declared per common share $ 0.10   $ 0.10  
Common stock dividends payable, date to be paid Jun. 10, 2016   Mar. 17, 2016  
Common stock dividends payable, date of record May 23, 2016   Feb. 29, 2016  
Repurchase authorization increased amount     $ 100,000,000  
Stock repurchase program expiration date     Dec. 31, 2017  
Repurchase authorization     $ 120,000,000  
Purchase share capital of Processa, SAS, percentage     65.00%  
Increase in Interest rate applicable to loans under credit agreement   0.50%    
Increase in additional interest rate applicable to loan under credit agreement   0.25%    
Dividend payable per share   $ 0.10    
Debt instrument fee percentage   0.50%