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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Stock Options Outstanding
The following table reflects the summary of stock options outstanding at December 31, 2020:
 Stock Options Weighted Average Exercise PriceWeighted Average Remaining Contractual Term (Years)Aggregate Intrinsic Value (000's)
Non-statutory stock options:    
Outstanding at beginning of period306,506$39.23  
Granted  
Forfeited(5,396)41.90  
Exercised  
Expired(106,846)39.09  
Outstanding and exercisable at end of period194,264$39.236.09$—
Schedule of Non-Vested Restricted Stock Unit Grants
A summary of the Company’s non-vested restricted stock activity during 2020 is presented in the following table: 
 Restricted Stock UnitsWeighted Average Grant Date Fair Value Per Unit
Non-vested at beginning of period573,066$4.46
Granted
Vested(289,281)5.84
Forfeited(125,126)3.71
Non-vested at end of period158,659$2.53
Schedule of Non-Vested Performance Stock Units
A summary of the Company’s non-vested performance-based restricted stock activity during 2020 is presented in the following table:
Number of Performance Stock UnitsWeighted Average Grant Date Fair Value Per Unit
Non-vested at beginning of period312,238$20.52
Granted
Vested(116,227)35.29
Performance Adjustment(167,519)9.52
Forfeited (28,492)24.95
Non-vested at end of period$—