XML 110 R96.htm IDEA: XBRL DOCUMENT v3.10.0.1
Share-Based Payments - Summary of Restricted Stock Awards (Details) - Restricted Stock [Member] - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]      
Nonvested shares, Beginning Balance, Shares 673    
Nonvested shares, Beginning Balance, Weighted-Average Grant Date Fair Value $ 40.90    
Granted, Shares 687    
Granted, Weighted-Average Grant Date Fair Value $ 37.61 $ 42.85 $ 33.56
Vested, Shares (439)    
Vested, Weighted-Average Grant Date Fair Value $ 42.60    
Forfeited, Shares (14)    
Forfeited, Weighted-Average Grant Date Fair Value $ 40.00    
Nonvested shares, Ending Balance, Shares 907 673  
Nonvested shares, Ending Balance, Weighted-Average Grant Date Fair Value $ 37.61 $ 40.90