• Filing Date: 2014-03-12
  • Form Type: 10-K
  • Description: Annual report
v2.4.0.8
Fair Value Measurements - Available-for-Sale Securities Measured at Fair Value (Parenthetical) (Detail)
Dec. 31, 2013
Dec. 11, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument stated interest rate 3.875%  
Senior Notes [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fixed annual rate of interest 8.00%  
Convertible Debt [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument stated interest rate 3.875% 3.875%
Fair Value, Measurements, Recurring [Member] | Senior Notes [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fixed annual rate of interest 8.00%  
Fair Value, Measurements, Recurring [Member] | Convertible Debt [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument stated interest rate 3.875%