v3.3.1.900
Equity Textuals (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Feb. 03, 2016
Mar. 28, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Feb. 04, 2016
Equity Text [Abstract]            
Common stock-based award activity (in shares)     676,126 252,674 265,995  
Stock Issued During Period, Shares, New Issues       9,200,000 7,500,000  
Stock Issued During Period, Value, New Issues       $ 632,500 $ 331,900  
Stock issuance costs       $ 22,100 12,000  
Stock Issued During Period, Shares, Conversion of Convertible Securities       12,173,291    
Conversion of Stock, Shares Converted       13,877,552    
Fractional Share, Cash in Lieu, Share Amount       0.22807018    
Preferred stock conversion inducement payment   $ 19,600 $ 0 $ 19,565 $ 0  
Preferred Stock Conversions, Cash Payment Upon Conversion   $ 23,400   $ 23,400    
Contribution to defined benefit pension plan (in shares)     66,000 183,000 88,200  
Stock Repurchase Program, Authorized Amount     $ 100,000      
Stock Repurchased and Retired During Period, Shares 1,000,000   986,279      
Stock Repurchased and Retired During Period, Value     $ 27,367      
Stock Repurchase Program, Remaining Authorized Repurchase Amount           $ 52,000
Other Comprehensive Loss, Net of Tax, Portion Attributable to Noncontrolling Interest     (22,800) $ (12,400) $ (17,500)  
Unrecognized stock-based compensation expense     $ 50,300      
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition     1 year 8 months      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value     $ 21,800 13,300 9,200  
Stock Option Plan 2008 Description     Under the 2008 Plan, the Company may grant options to purchase Common stock, with a maximum term of 10 years at a purchase price equal to the market value of the Company’s Common stock on the date of grant. In the case of an incentive stock option granted to a holder of 10% of the Company’s outstanding Common stock, the Company may grant options to purchase Common stock with a maximum term of 5 years, at a purchase price equal to 110% of the market value of the Company’s Common stock on the date of grant.      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value     $ 8,900 $ 6,400 $ 2,500