Quarterly report pursuant to Section 13 or 15(d)

Stockholder's Equity - Nonvested Stock Activity (Details)

v3.20.2
Stockholder's Equity - Nonvested Stock Activity (Details)
9 Months Ended
Sep. 30, 2020
$ / shares
shares
Restricted stock  
Number of shares  
Share grants outstanding, beginning balance | shares 534,331
Granted (in shares) | shares 135,090
Vested (in shares) | shares (199,330)
Share grants outstanding, ending balance | shares 470,091
Weighted average grant date fair value  
Beginning balance, Weighted average grant date fair value (in dollars per share) | $ / shares $ 71.01
Granted (in dollars per share) | $ / shares 123.10
Vested (in dollars per share) | $ / shares 62.31
Ending balance, Weighted average grant date fair value (in dollars per share) | $ / shares $ 89.32
Options  
Number of shares  
Share grants outstanding, beginning balance | shares 98,756
Granted (in shares) | shares 0
Vested or exercised (in shares) | shares (16,286)
Share grants outstanding, ending balance | shares 82,470
Weighted average grant date fair value  
Share grants outstanding, beginning balance (in dollars per share) | $ / shares $ 40.71
Granted (in dollars per share) | $ / shares 0
Vested or exercised (in dollars per share) | $ / shares 32.93
Share grants outstanding, ending balance (in dollars per share) | $ / shares $ 42.25