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Share-Based Compensation - Narrative (Details) - USD ($)
 1 Months Ended 12 Months Ended
Jan. 24, 2014
Oct. 25, 2013
Mar. 31, 2016
Feb. 29, 2016
Mar. 31, 2015
Feb. 28, 2015
Mar. 31, 2014
Feb. 28, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                      
Useful Life of the 2007 plan                 10 years    
Minimum number of shares of common stock available for grant                 1,700,000    
Additional number of shares of common stock available for grant                 1,500,000    
Shares available for grant                 861,561    
Capitalized share-based compensation costs                 $ 0 $ 0 $ 0
Dividends declared per common share (USD per share) $ 1.50 $ 2.50             $ 0.40 $ 0.40 $ 1.90
Repurchase of common stock for employee tax withholding obligations amount, shares                 25,432 35,649 72,996
Shares available for grant                 861,561    
Award vesting period                 3 years    
Restricted Stock                      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                      
Shares available for grant                 861,561    
Grant date fair value of restricted stock vested                 $ 2,000,000 $ 2,200,000 $ 4,500,000
Unamortized cost                 $ 2,500,000    
Recognition period of unrecognized cost                 1 year 2 months 12 days    
Repurchase of common stock for employee tax withholding obligations amount, shares                 25,432 35,649 72,996
Repurchase of common stock for employee tax withholding obligations amount                 $ 700,000 $ 1,000,000 $ 1,800,000
Shares available for grant                 861,561    
Performance Unit Incentive Plan (“PUP”)                      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                      
Awards granted during the period                 $ 2,700,000    
Stock value payable                 900,000    
Liability awards recorded                 7,600,000 2,400,000  
Payments to employees     $ 200,000   $ 2,400,000   $ 2,900,000        
Restricted Stock Units                      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                      
Payments to employees       $ 200,000   $ 300,000   $ 200,000      
Liabilities related to restricted stock                 400,000 $ 300,000  
Stock Options                      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                      
Unamortized cost                 $ 0    
Exercised                 0    
Forfeited or expired                 0    
Exercisable                 63,773 63,773  
Outstanding                 63,773 63,773  
Weighted-average exercise price                 $ 16.62 $ 16.62  
Weighted average remaining contractual life                 3 years 2 months 12 days 3 years 2 months 12 days  
Restructuring Charges                      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                      
Share-based compensation expense and reversal                 $ 200,000 $ 45,000 (100,000)
Restructuring Charges | Performance Unit Incentive Plan (“PUP”)                      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                      
Share-based compensation expense and reversal                 $ 200,000 $ 45,000 $ (100,000)