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Share-based Compensation (Tables)
 12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement [Abstract]  
Summary of Share-Based Compensation Expense
For the years ended December 31, 2021, 2020 and 2019 the following table presents total share-based compensation expense in each functional line item on the consolidated statements of operations (in thousands):
 Year Ended December 31,
 202120202019
Cost of revenues$2,469 $1,583 $1,133 
Research and development4,813 2,823 1,548 
Sales and marketing3,704 2,346 1,669 
General and administrative5,663 3,667 2,952 
Total$16,649 $10,419 $7,302 
During the quarter ended March 31, 2021, the Board of Directors of the Company approved and the Company granted restricted stock units to eligible employees under the 2018 Omnibus Incentive Compensation Plan, previously named the Amended and Restated 2009 Omnibus Incentive Compensation Plan (the “2018 Plan”) that were immediately vested, as fiscal 2020 annual bonus payments. The total charges recorded during the quarter ended March 31, 2021 were $7.0 million. Such bonus payments in fiscal 2020 were paid in the quarter ended June 30, 2020, and total charges related to such bonus payments recorded during the quarter ended June 30, 2020 were $2.7 million. Such bonus payments in fiscal 2019 were paid in the quarter ended September 30, 2019, and total charges related to such bonus payments recorded during the quarter ended September 30, 2019 were $2.4 million. During the year ended December 31, 2021, the Board of Directors of the Company approved, and the Company granted restricted stock units under the 2018 Plan to certain employees that contributed to the completion of the divestiture of Ctrack South Africa. Such grants were immediately vested, and the total charges were $0.6 million.
Share-based Compensation Stock Option Fair Value Assumptions
The following table presents the weighted-average assumptions used in the Black-Scholes valuation model by the Company in calculating the fair value of each stock option granted:
 Year Ended December 31,
 20212020
Expected dividend yield— %— %
Risk-free interest rate0.9 %0.9 %
Volatility73 %95 %
Expected term (in years)5.45.8
Summary of Stock Option Activity
The following table summarizes the Company’s stock option activity for the years ended December 31, 2021 and 2020 (dollars in thousands, except per share data):
Stock
Options
Outstanding		Weighted-Average
Exercise
Price Per
Option		Weighted-Average
Remaining
Contractual
Term
(in years)		Aggregate
Intrinsic
Value
Outstanding — December 31, 20188,796,212 $2.10 
Granted2,660,936 5.17 
Exercised(1,489,067)1.69 
Canceled(923,777)3.64 
Outstanding — December 31, 20199,044,304 $2.91 
Granted1,526,000 9.41 
Exercised(1,357,620)3.06 
Canceled(732,705)3.60 
Outstanding — December 31, 20208,479,979 $3.99 
Granted1,929,500 8.86 
Exercised(1,315,552)2.62 
Canceled(1,008,134)8.60 
Outstanding — December 31, 20218,085,793 $4.81 7.16$16,603 
Vested and Expected to Vest — December 31, 20217,398,958 $4.51 6.99$16,464 
Exercisable — December 31, 20214,816,773 $3.00 6.17$15,081 
Summary of Restricted Stock Unit Activity
A summary of restricted stock unit activity under all plans for the year ended December 31, 2021 is presented below:
Number of SharesWeighted-Average Grant-Date Fair Value
Non-vested — December 31, 2018454,382 $2.17 
Granted870,150 $5.07 
Vested(809,482)$4.20 
Forfeited(114,735)$3.66 
Non-vested — December 31, 2019400,315 $3.95 
Granted570,368 $10.52 
Vested(548,160)$7.28 
Forfeited(5,418)$4.06 
Non-vested — December 31, 2020417,105 $8.68 
Granted1,931,263 $8.53 
Vested(1,019,686)$10.20 
Forfeited(80,959)$10.75 
Non-vested — December 31, 20211,247,723 $7.65