Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation (Shares Vested and Did Not Vest) (Details)

v3.19.3.a.u2
Share-Based Compensation (Shares Vested and Did Not Vest) (Details) - RSU equity awards - shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting Multiplier 100.00% 142.00%  
Target (in shares) 88,790 83,002 258,406
Vested at end of performance period (in shares) 88,790 117,862 441,232
Did not vest at end of performance period (in shares) 0 0 0
Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting Multiplier     142.00%
Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting Multiplier     200.00%