XML 54 R44.htm IDEA: XBRL DOCUMENT v3.20.2
Stock-Based Compensation Plans (Details 2) - Performance Shares
6 Months Ended
Jun. 30, 2020
$ / shares
shares
Performance awards  
Equity instruments outstanding at the beginning of the period (in shares) 253,432
Equity instruments granted (in shares) 76,164
Change in awards based on performance (in shares) 18,112
Converted to restricted stock (in shares) (96,317)
Forfeited (in shares) (8,004)
Equity instruments outstanding at the end of the period (in shares) 243,387
Weighted average grant date fair value per award  
Equity instruments outstanding at the beginning of the period (in dollars per share) | $ / shares $ 176.27
Grant date fair value per share (in dollars per share) | $ / shares 238.86
Change in awards based on performance (in dollars per share) | $ / shares 177.26
Converted to restricted stock (in dollars per share) | $ / shares 177.26
Forfeited (in dollars per share) | $ / shares 183.45
Equity instruments outstanding at the end of the period (in dollars per share) | $ / shares $ 195.31
Grants in period based on total shareholder metrics 38,314
Grants in period based on financial metrics 37,850