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Stockholders' Equity (Tables)
 6 Months Ended
Jun. 30, 2022
Share-based Payment Arrangement [Abstract]  
Summary of Stock Option Activity and Weighted Average Exercise Prices
A summary of the Company’s stock option activity and weighted average exercise prices follows:
Stock Option ActivityWeighted Average Remaining Contractual Term
(In years)		Aggregate Intrinsic Value
(In thousands)
Options
(In thousands)		Weighted
Average
Exercise Price
Balances outstanding at December 31, 20214,782 $27.52 6.77$62,300 
Granted685 24.26 
Exercised(66)13.53 
Cancelled or expired(617)41.39 
Balances outstanding at June 30, 20224,784 25.22 6.647,932 
Options vested and expected to vest 1,167 33.73 8.611,376 
Options exercisable at June 30, 20222,891 $19.38 5.28$6,207 
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity A summary of the Company’s RSU activity and weighted average exercise prices follows:
Restricted Stock Unit Activity
Number of Shares
(In thousands)		Weighted Average
Grant Date Fair Value
(Per share)		Aggregate Fair Value
(In thousands)
Balances outstanding at December 31, 20213,732 $43.63 $133,308 
Awarded2,596 23.47 
Vested(1,549)28.76 
Forfeited(712)44.66 
Non-vested and outstanding at June 30, 20224,067 $36.30 $57,501 
Expected to vest 2,403 $36.55 $33,974 
Weighted Average Assumptions of Fair Value Options Using Black-Scholes Option-Pricing Model The fair value of each option grant is estimated on the date of grant, adjusted for estimated forfeitures, using the Black-Scholes option-pricing model with the following weighted average assumptions:
Three Months EndedSix Months Ended
June 30,June 30,
2022202120222021
Dividend yield0.00%0.00%0.00%0.00%
Risk-free interest rate
2.81% -3.38%
0.77% - 0.84%
1.62% - 3.38%
0.46% - 0.84%
Expected life (in years)5555
Historical volatility
57.82% - 58.91%
54.31% - 54.55%
53.87% - 58.91%
53.94% - 54.55%