Annual report pursuant to Section 13 and 15(d)

Stock Plans and Management Compensation (Details 1)

v3.19.3.a.u2
Stock Plans and Management Compensation (Details 1) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Shares Available for Grant (in shares) 5,100    
Non-Vested Stock Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards Vesting Period (in years) 3 years    
Age of Grantee   62 years  
Share-Based Compensation Expense $ 10,900 $ 11,100 $ 9,700
Share-Based Compensation Expense, Tax Benefit 2,700 2,800 3,700
Fair Value of Shares Vested During the Period $ 19,200 $ 4,400 $ 12,100
Weighted Average Grant Date Fair Value $ 53.42 $ 54.82  
Awarded - Weighted Average Grant Date Fair Value 49.12 $ 59.05 $ 60.30
Forfeited - Weighted Average Grant Date Fair Value 41.45    
Vested - Weighted Average Grant Date Fair Value $ 57.74    
Share-Based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]      
Outstanding at January 1 574    
Awarded 374    
Forfeited (183)    
Vested (321)    
Outstanding at December 31 444 574  
Unrecognized Compensation Cost $ 9,100    
Unrecognized Compensation Cost, Period for Recognition 1 year 6 months    
Non-Vested Stock Awards [Member] | Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Age of Grantee plus Grantees Total Number of Years of Service 70 years    
Stock Options and SAR's [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards Vesting Period (in years) 4 years    
Age of Grantee   62 years  
SARs/Stock Options Outstanding [Roll Forward]      
Outstanding on January 1 343 594 978
Exercised (224) (248) (352)
Forfeited 0 (3) (32)
Outstanding on December 31 119 343 594
Exercisable and Vested on December 31 119 343 594
Weighted Average Exercise Price [Abstract]      
Outstanding on January 1 $ 16.04 $ 14.40 $ 14.43
Exercised 13.13 12.10 14.37
Forfeited 5.86 17.06 15.76
Outstanding on December 31 21.57 16.04 14.40
Exercisable and Vested on December 31 $ 21.57 $ 16.04 $ 14.40
Weighted Average Remaining Contractual Term [Abstract]      
Outstanding on December 31 1 year 4 months 24 days    
Exercisable and Vested on December 31 1 year 4 months 24 days    
Vested and Expected to Vest on December 31 1 year 4 months 24 days    
Aggregate Intrinsic Value [Abstract]      
Exercised $ 10,494 $ 12,636 $ 16,071
Outstanding on December 31 4,571 10,439 24,261
Exercisable and Vested on December 31 $ 4,571 10,439 24,261
Stock Options and SAR's [Member] | Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Age of Grantee plus Grantees Total Number of Years of Service 70 years    
Performance Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-Based Compensation Expense $ 6,400 5,600 6,200
Share-Based Compensation Expense, Tax Benefit 1,600 1,400 2,400
Fair Value of Shares Vested During the Period $ 4,900 $ 7,800 $ 5,500
Weighted Average Grant Date Fair Value $ 53.55 $ 61.32  
Awarded - Weighted Average Grant Date Fair Value 48.92    
Forfeited - Weighted Average Grant Date Fair Value 49.30    
Vested - Weighted Average Grant Date Fair Value $ 57.49    
Share-Based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]      
Outstanding at January 1 91    
Awarded 137    
Forfeited (59)    
Vested (81)    
Outstanding at December 31 88 91  
Unrecognized Compensation Cost $ 2,300    
Unrecognized Compensation Cost, Period for Recognition 1 year 7 months 6 days