Quarterly report pursuant to Section 13 or 15(d)

Share-Based Payments - Stock Option Activity (Details)

v3.20.2
Share-Based Payments - Stock Option Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2019
Jun. 30, 2020
Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Exercised (in shares) (18)    
Share-based compensation expense   $ 5,507 $ 5,910
Share-based Payment Arrangement, Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock option grants expire (in years)   7 years  
Grants, vesting period (in years)   3 years  
Continuing Operations [Member] | Share-based Payment Arrangement, Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected dividend yield (in hundredths)   1.10%  
Expected stock price volatility   24.10%  
Weighted Average Risk Free Interest Rate   1.50%  
Expected life of options (in years)   5 years 10 months 24 days  
Weighted-average fair value of options (dollars per share)   $ 14.79  
Outstanding, beginning of period (in shares)   417  
Granted (in shares)   36  
Forfeited (in shares)   (4)  
Outstanding, end of period (in shares)   449  
Exercisable, end of period (in shares)   317  
Outstanding, beginning of period (in dollars per share)   $ 53  
Grants in Period (in dollars per share)   66  
Forfeited in period (in dollars per share)   60  
Outstanding, end of period (in dollars per share)   54  
Exercisable, end of period (in dollars per share)   $ 51  
Aggregate Intrinsic Value Outstanding, end of period   $ 247  
Aggregate Intrinsic Value Exercisable, end of period   $ 1,379  
Weighted-average remaining contractual term Outstanding, end of period (in years)   3 years 10 months 24 days  
Weighted-average remaining contractual term Exercisable, end of period (in years)   3 years 3 months 18 days  
Share-based compensation expense   $ 600 829
Tax benefit related to share-based expense   153 212
Unrecognized share-based compensation, net of estimated forfeitures   $ 1,348 2,316
Weighted average period over which unrecognized compensation will be recognized (years)   1 year 7 months 6 days  
Discontinued Operations [Member] | Share-based Payment Arrangement, Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Outstanding, beginning of period (in shares)   14  
Outstanding, end of period (in shares)   14  
Exercisable, end of period (in shares)   12  
Outstanding, beginning of period (in dollars per share)   $ 52  
Outstanding, end of period (in dollars per share)   52  
Exercisable, end of period (in dollars per share)   $ 52  
Aggregate Intrinsic Value Outstanding, end of period   $ 37  
Aggregate Intrinsic Value Exercisable, end of period   $ 41  
Weighted-average remaining contractual term Outstanding, end of period (in years)   3 years 3 months 18 days  
Weighted-average remaining contractual term Exercisable, end of period (in years)   3 years 2 months 12 days  
Share-based compensation expense   $ 11 21
Tax benefit related to share-based expense   3 5
Unrecognized share-based compensation, net of estimated forfeitures   $ 11 $ 42
Weighted average period over which unrecognized compensation will be recognized (years)   7 months 6 days