XML 59 R44.htm IDEA: XBRL DOCUMENT v3.5.0.2
Fair Value Measurements Fair Value Measurements - Liabilities Not Measured at Fair Value (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Aug. 31, 2016
Feb. 29, 2016
Dec. 31, 2015
Sep. 30, 2015
5% Convertible Senior Notes due 2017          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Stated interest rate (in hundredths) 5.00%     5.00% 5.00%
2% Convertible Senior Notes due 2020          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Stated interest rate (in hundredths) 2.00%     2.00% 2.00%
Senior Notes | 5.75% Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Stated interest rate (in hundredths) 5.75% 5.75%   5.75%  
Convertible Junior Subordinated Debentures, interest at 9% per annum, due April 2063          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Stated interest rate (in hundredths) 9.00%   9.00% 9.00% 9.00%
Carrying Value          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
FHLB Advance $ 155,000        
5% Notes 144,629     $ 331,546  
2% Notes 204,444     490,755  
5.75% Notes 417,087        
9% Debentures 256,872     389,522  
Total long-term debt 1,178,032     1,211,823  
Fair Value | Significant Other Observable Inputs (Level 2)          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
FHLB Advance 159,302        
5% Notes 148,904     345,616  
2% Notes 261,530     701,955  
5.75% Notes 442,531        
9% Debentures 318,077     455,067  
Total long-term debt $ 1,330,344     $ 1,502,638