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Compensation Plans and Programs - Narrative (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
$ / shares
shares
Dec. 31, 2018
USD ($)
$ / shares
shares
Dec. 31, 2017
USD ($)
$ / shares
shares
Jun. 14, 2017
shares
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
RSUs credited on unvested RSU awards as dividend equivalents (in shares) | shares 100,000      
Number of RSUs granted under the equity plans (in shares) | shares 512,000      
Weighted-average grant date fair values (in usd per share) | $ / shares $ 66.19 $ 73.75 $ 58.63  
Fair value of RSUs vested $ 12,700 $ 25,200 $ 56,000  
Vested weighted-average grant date fair value of awards (in usd per share) | $ / shares $ 58.84 $ 54.75 $ 35.14  
Number of minimum exercise price per share options 100.00%      
Number of outstanding options under a prior stock plan with an indefinite contractual life (in shares) | shares 825,000 695,000    
Weighted-average fair value granted (in usd per share) | $ / shares $ 13.68 $ 24.56 $ 19.90  
Weighted average remaining contractual life of outstanding options (in years) 8 years 3 months 18 days      
Lower range limit exercise price (in usd per share) | $ / shares $ 9.00      
Upper range limit exercise price (in usd per share) | $ / shares $ 11.63      
Outstanding options intrinsic value $ 7,200      
Number of outstanding exercisable options (in shares) | shares 400,000      
Weighted-average exercise price (in usd per share) | $ / shares $ 35.81      
Outstanding options intrinsic value $ 7,200      
Weighted-average remaining contractual life (in years) 8 years 7 months 6 days      
Exercised stock options intrinsic value $ 100 $ 5,600 $ 300  
Proceeds from exercise of stock options $ 2 $ 6,723 382  
Outstanding options (in shares) | shares 300,000 300,000    
Proceeds from stock options if exercised $ 7,600 $ 11,200    
Savings Plan        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Defined contribution plan cost 1,100 1,300 1,400  
Other Defined Contribution Plans        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Defined contribution plan cost $ 200 $ 200 $ 300  
Minimum        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Multiple of target number of shares 0      
Maximum        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Multiple of target number of shares 2      
Time-based Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Vesting period 3 years      
Performance Based Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Maximum potential payout level percentage 200.00%      
Performance Based Restricted Stock Units | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Vesting period 3 years      
Performance Based Restricted Stock Units | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Vesting period 5 years      
Stock Options Outstaning which have an Indefinite Contractual Term        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Number of outstanding options under a prior stock plan with an indefinite contractual life (in shares) | shares 100,000      
Cash from stock options        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Proceeds from exercise of stock options $ 100      
Restricted Stock Units (RSU) and/or Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Unrecognized compensation cost related to share-based awards at current performance accrual rates $ 10,200      
Number of RSUs granted under the equity plans (in shares) | shares 300,000 300,000 200,000  
Restricted Stock Units (RSU) and/or Restricted Stock | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Vesting period 3 years      
Restricted Stock Units (RSU) and/or Restricted Stock | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Vesting period 5 years      
Equity Option        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Vesting period 3 years      
Unrecognized compensation cost related to share-based awards at current performance accrual rates $ 900      
Equity Option | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Vesting period 3 years      
Multiple of target number of shares   0    
Exercisable period 7 years      
Equity Option | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Vesting period 5 years      
Multiple of target number of shares   2    
Exercisable period 10 years      
2017 Plan        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Number of shares available for issuance under the 2017 plan (in shares) | shares       2,400,000
2017 Plan | Time-based Restricted Stock Units (RSUs) | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Vesting period 1 year      
2017 Plan | Time-based Restricted Stock Units (RSUs) | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Vesting period 3 years      
2017 Plan | Performance Based Restricted Stock Units | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Vesting period 3 years      
2017 Plan | Performance Based Restricted Stock Units | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award and Other Compensation Benefits [Line Items] [Line Items]        
Vesting period 5 years