XML 23 R42.htm IDEA: XBRL DOCUMENT v2.4.0.8
Indebtedness (Narrative) (Details)
 6 Months Ended 3 Months Ended 6 Months Ended 6 Months Ended 1 Months Ended 6 Months Ended 6 Months Ended
Jun. 30, 2014
USD ($)
Dec. 31, 2013
USD ($)
Jun. 30, 2014
1 1/4% Convertible Senior Subordinated Notes Due December 15, 2036 [Member]
USD ($)
Jun. 30, 2013
1 1/4% Convertible Senior Subordinated Notes Due December 15, 2036 [Member]
USD ($)
Jun. 30, 2014
1 1/4% Convertible Senior Subordinated Notes Due December 15, 2036 [Member]
USD ($)
Jun. 30, 2013
1 1/4% Convertible Senior Subordinated Notes Due December 15, 2036 [Member]
USD ($)
Dec. 31, 2013
1 1/4% Convertible Senior Subordinated Notes Due December 15, 2036 [Member]
USD ($)
Jun. 30, 2014
4 1/2% Senior Unsecured Term Loan Due 2016 [Member]
USD ($)
Jun. 30, 2014
4 1/2% Senior Unsecured Term Loan Due 2016 [Member]
EUR (€)
Dec. 31, 2013
4 1/2% Senior Unsecured Term Loan Due 2016 [Member]
USD ($)
Jun. 30, 2014
5 7/8% Senior Notes due 2021 [Member]
USD ($)
Dec. 31, 2013
5 7/8% Senior Notes due 2021 [Member]
USD ($)
Jun. 30, 2014
5 7/8% Senior Notes due 2021 [Member]
Interest Accrual, Option Two [Member]
Jun. 30, 2014
Term Loan Facility [Member]
USD ($)
Jul. 31, 2014
Subsequent Event [Member]
1 1/4% Convertible Senior Subordinated Notes Due December 15, 2036 [Member]
USD ($)
Jun. 30, 2014
Revolving Credit Facility [Member]
Line of Credit [Member]
USD ($)
Jun. 30, 2014
Amended and Restated Credit Facility Agreement [Member]
Line of Credit [Member]
Interest Accrual, Option Two [Member]
Jun. 30, 2014
Amended and Restated Credit Facility Agreement [Member]
Line of Credit [Member]
Interest Accrual, Option Three [Member]
Jun. 30, 2014
Amended and Restated Credit Facility Agreement [Member]
Line of Credit [Member]
Minimum [Member]
Interest Accrual, Option One [Member]
Jun. 30, 2014
Amended and Restated Credit Facility Agreement [Member]
Line of Credit [Member]
Minimum [Member]
Interest Accrual, Option Three [Member]
Variable Basis, Additional Margin [Member]
Jun. 30, 2014
Amended and Restated Credit Facility Agreement [Member]
Line of Credit [Member]
Maximum [Member]
Interest Accrual, Option One [Member]
Jun. 30, 2014
Amended and Restated Credit Facility Agreement [Member]
Line of Credit [Member]
Maximum [Member]
Interest Accrual, Option Three [Member]
Variable Basis, Additional Margin [Member]
Jun. 30, 2014
Amended and Restated Credit Facility Agreement [Member]
Term Loan Facility [Member]
USD ($)
Jun. 30, 2014
Amended and Restated Credit Facility Agreement [Member]
Revolving Credit Facility [Member]
Line of Credit [Member]
USD ($)
Jun. 30, 2014
Future Periodic Payment [Member]
Term Loan Facility [Member]
USD ($)
Debt Instrument [Line Items]                                                  
Carrying amount     $ 32,300,000   $ 32,300,000   $ 54,300,000                                    
Interest expense on the liability component of convertible debt     300,000 2,900,000 900,000 5,800,000                                      
Debt instrument, interest rate, effective percentage     6.10%   6.10%                                        
Debt maturity date         Dec. 15, 2036                                        
Convertible senior subordinated notes conversion price (in dollars per share)     $ 40.27   $ 40.27                                        
Convertible senior subordinated notes, conversion rate         24.8295                                        
Convertible senior subordinated notes, principal amount     1,000   1,000                                        
Debt repurchased 49,700,000                                                
Debt converted                             151,500,000                    
Excess conversion value of notes         21,900,000                   59,100,000                    
Shares issued         378,087                   1,059,378                    
Convertible senior subordinated notes, triggering event, percent of closing sales price to conversion price         120.00%                                        
Days within trading period required to trigger qualifying event         20 days                                        
Trading period in which qualifying event must occur         30 days                                        
Senior notes               273,800,000   275,000,000 300,000,000 300,000,000                          
Debt Instrument, Face Amount               273,800,000 200,000,000.0   300,000,000                            
Margin on variable rate                         0.50%       0.50% 1.00% 1.00% 0.00% 2.00% 0.50%      
Maximum borrowing capacity on line of credit facility                               600,000,000             355,000,000 800,000,000  
Quarterly payment of debt                           5,000,000                     10,000,000
Credit facility 355,000,000 360,000,000                                              
Remaining borrowing capacity on line of credit facility 800,000,000 600,000,000                                              
Long-term debt, estimated fair value     204,300,000   204,300,000   290,500,000       339,800,000 322,100,000                          
Convertible debt 151,500,000 201,200,000                                              
Outstanding letters of credit $ 19,100,000 $ 16,700,000