XML 61 R47.htm IDEA: XBRL DOCUMENT v3.20.4
Stock-Based Compensation Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2020
Share-based Payment Arrangement [Abstract]  
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
The following table presents a summary of restricted stock transactions during the year ended December 31, 2020:
TRSAs
PRSUs
Weighted
Weighted
Average
Average
Number
Grant Date
Number
Grant Date
of
Fair Value
of
Fair Value
Year Ended December 31, 2020
Shares
(Per Share)
Units
(Per Unit)
Unvested restricted stock, beginning of year1,513,197 $43.68276,386 $50.61
Granted822,211 $20.84143,543 $36.20
Vested(581,902)$42.77(62,122)$56.60
Forfeited(145,380)$38.18(42,799)$51.29
Unvested restricted stock, end of year1,608,126 $32.83315,008 $42.77