• Filing Date: 2017-02-22
  • Form Type: 10-K
  • Description: Annual report
v3.6.0.2
Long-Term Debt - Summary of Long-Term Debt (Parenthetical) (Detail)
12 Months Ended
Dec. 31, 2016
Aug. 16, 2016
Jan. 14, 2016
Senior Notes [Member]      
Debt Instrument [Line Items]      
Fixed annual rate of interest 8.00%    
Debt instrument, maturity date Jan. 30, 2020    
Convertible Senior Notes [Member]      
Debt Instrument [Line Items]      
Debt instrument stated interest rate 3.875%    
Debt instrument, maturity date Mar. 15, 2019    
4% Promissory Note [Member]      
Debt Instrument [Line Items]      
Debt instrument stated interest rate 4.00%   4.00%
Debt instrument, maturity date Feb. 01, 2031    
3.75% Promissory Note [Member]      
Debt Instrument [Line Items]      
Debt instrument stated interest rate 3.75% 3.75%  
Debt instrument, maturity date Sep. 01, 2036