Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity (Details)

v3.19.2
Shareholders' Equity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Jun. 30, 2019
Jun. 30, 2018
Feb. 05, 2019
Jul. 21, 2016
Shareholders' Equity [Line Items]                    
Dividends per share (in dollars per share) $ 0.18 $ 0.18     $ 0.15 $ 0.15 $ 0.36 $ 0.30    
Stock Repurchased and Retired During Period, Shares 407       133   637 497    
Stock Repurchased and Retired During Period, In Total Dollars $ 24,436       $ 8,172   $ 38,617 $ 28,165    
Repurchase of Common Stock, Average Cost Per Share $ 60.05       $ 61.50   $ 60.65 $ 56.65    
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased 4,431           4,431      
Common Stock [Member]                    
Shareholders' Equity [Line Items]                    
Dividends per share (in dollars per share) $ 0.18 $ 0.18 $ 0.18 $ 0.15 $ 0.15 $ 0.15        
2016 Stock Repurchase Plan [Member]                    
Shareholders' Equity [Line Items]                    
Stock Repurchase Program, Number of Shares Authorized to be Repurchased                   3,000
Stock Repurchased and Retired During Period, Shares         133   68 497    
Stock Repurchased and Retired During Period, In Total Dollars         $ 8,172   $ 3,850 $ 28,165    
Repurchase of Common Stock, Average Cost Per Share         $ 61.50   $ 56.97 $ 56.65    
2019 Stock Repurchase Plan [Member]                    
Shareholders' Equity [Line Items]                    
Stock Repurchase Program, Number of Shares Authorized to be Repurchased                 5,000  
Stock Repurchased and Retired During Period, Shares 407           569      
Stock Repurchased and Retired During Period, In Total Dollars $ 24,436           $ 34,767      
Repurchase of Common Stock, Average Cost Per Share $ 60.05           $ 61.08