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Stock-based Compensation (Tables)
 12 Months Ended
Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Schedule Of Supply Share Authorized Changes For The Equity-Based
The following table summarizes the Company’s additional shares authorized changes for the 2015 Plan (in thousands):

Board Approval Date Shares Added Total Additional Shares Authorized
May 1, 20156,000 6,000 
June 13, 20184,525 10,500 
April 15, 20214,910 15,400 
April 20, 20234,000 19,400 
November 2, 20238,000 27,400 
Schedule of Stock-Based Compensation Expense
Total compensation expense by award type and line item in our consolidated financial statements was as follows (in thousands):
For the Year Ended December 31,
  202320222021
Award Type
Stock options$74 $416 $1,337 
RSUs26,718 17,327 9,606 
Performance-based RSUs13,214 14,308 2,471 
LSUs495 1,930 3,297 
Total compensation expense by award type$40,501 $33,981 $16,711 
Line Item
Cost of revenue$1,662 $4,387 $2,263 
Selling, general and administrative expenses38,839 29,594 14,448 
Total compensation expense by financial statement line item$40,501 $33,981 $16,711 
Schedule Of Unrecognized Compensation Expense
Total unrecognized compensation expense (in thousands) and expected weighted-average period (in years) by award type for all of our stock-based incentive plans were as follows:

As of December 31, 2023
Unrecognized Compensation ExpenseWeighted Average Period (years)
RSUs$42,132 1.39
PSUs17,762 1.81
Total$59,894 
Schedule of Stock Option Information
Information with respect to our stock options (in thousands), including weighted-average remaining contractual term (in years) and aggregate intrinsic value (in thousands) was as follows:

OptionsWeighted Average Exercise PriceWeighted Average Remaining Contractual TermAggregate Intrinsic Value
Outstanding as of December 31, 20221,895 $10.40 3.24$33,503 
Exercised(1,237)8.72 
Forfeited— — 
Outstanding as of December 31, 2023658 $13.23 4.99$13,032 
Vested and expected to vest after December 31, 2023658 $13.23 4.99$13,032 
Exercisable as of December 31, 2023658 $13.23 4.99$13,032 
Schedule of Performance-Based Stock Option Awards Activity
Information with respect to our performance-based stock options (shares and aggregate intrinsic value shown in thousands, weighted-average remaining contractual term shown in years) was as follows:

OptionsWeighted Average Exercise PriceWeighted Average Remaining Contractual TermAggregate Intrinsic Value
Outstanding as of December 31, 2022268 $10.27 4.16$5,730 
Exercised(162)10.27 
Outstanding as of December 31, 2023106 10.27 2.172,401 
Vested and expected to vest after December 31, 2023106 $10.27 2.17$2,401 
Schedule of Restricted Stock Units Information Information with respect to our RSUs (not including performance-based RSUs) is presented below (in thousands, except for weighted-average grant-date fair value):
Total RSUsWeighted Average Grant Date Fair Value
Outstanding as of December 31, 20222,268 $22.09 
Granted1,281 33.85 
Forfeited(428)27.64 
Vested(969)20.83 
Outstanding as of December 31, 20232,152 $28.55 
Schedule of Leveraged Stock Units Activity Information with respect to
our LSU awards (shares and aggregate intrinsic value shown in thousands, weighted-average remaining contractual term shown in years) was as follows:
Leveraged Stock UnitsWeighted Average Grant Date Fair ValueWeighted Average Remaining Contractual TermAggregate Intrinsic Value
Outstanding as of December 31, 2022520 $9.15 7.24$9,846 
Change in achievement520 9.15 
Vested(1,040)9.15 
Outstanding as of December 31, 2023— $— 0.00$— 
Schedule of Price Assumptions for Performance Based Stock Units
The price assumptions used for our performance based stock unit awards were as follows:

1st Tranche2nd Tranche
Weighted-average fair value per performance based stock unit granted$20.64 $20.69 
Assumptions:
Expected term2 years3 years
Expected volatility89.5 %77.7 %
Risk-free interest rate0.12 %0.25 %
Dividend yield— %— %
Schedule Of Information Of Performance Based Stock Units
Information with respect to our performance based restricted stock unit awards (shares and aggregate intrinsic value shown in thousands, weighted-average remaining contractual term shown in years) was as follows:
Performance Based Stock UnitsWeighted Average Grant Date Fair ValueWeighted Average Remaining Contractual TermAggregate Intrinsic Value
Outstanding as of December 31, 20221,396 $24.30 8.72$5,274 
Granted542 34.07 
Change in achievement72 26.60 
Vested(343)19.54 
Forfeited(14)31.77 
Outstanding as of December 31, 20231,653 $30.53 8.42$4,131 
Vested and expected to vest after December 31, 20231,653 $30.53 8.42$4,131