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Share-Based Awards (Tables)
 12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions Assumptions used to calculate the grant date fair value of the performance shares granted during 2021, by grant date, were as follows:
February 2021May 2021
Expected volatility52.01 %54.99 %
Risk-free interest rate0.18 %0.27 %
Schedule of Restricted Stock Units and Performance Shares Settled in Stock Transactions
The activity for these awards for the year ended December 31, 2021 was as follows (in thousands, except for per share amounts):
Shares & UnitsWeighted-Average Fair Value Per Share
Nonvested, beginning of period1,769 $36 
Granted1,769 $34 
Vested(763)$34 
Forfeited(293)$35 
Nonvested, end of period2,482 $35 
Summary of Restricted Stock Units and Performance Shares Settled in Cash Transactions The activity for these awards for the year ended December 31, 2021 was as follows (in thousands, except for per share amounts):
UnitsWeighted-Average Fair Value Per Share
Nonvested, beginning of period156 $36 
Granted206 $36 
Vested(64)$36 
Forfeited(33)$41 
Nonvested, end of period265 $36 
Summary of Stock Option Transactions The stock option transactions for the year ended December 31, 2021 were as follows (in thousands, except for per share amounts):
OptionsWeighted-Average Exercise Price
Outstanding, beginning of period658 $56 
Options granted500 $37 
Exercised(98)$44 
Forfeited(67)$47 
Outstanding, end of period993 $48 
Exercisable, end of period493 $59 
Summary of Aggregate Intrinsic Value Related to Options Outstanding, Exercisable and Exercised
The aggregate intrinsic value related to stock options exercised, outstanding and exercisable as of and for the years ended December 31, was as follows (in thousands):
202120202019
Exercised$289 $21 $2,614 
Outstanding$530 $— $52 
Exercisable$— $— $52 
Stock Options Outstanding By Price Range
Stock options outstanding at December 31, 2021 were as follows (options in thousands):
Price RangeWeighted-Average
Contractual Life		OptionsWeighted-Average
Exercise Price
$30.01 to $40
10.0500 $37 
$40.01 to $50
0.129 $45 
$50.01 to $60
1.0116 $52 
$60.01 to $70
1.7348 $63 
Options outstanding5.8993 $48 
Options exercisable1.5493 $59