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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Schedule of Restricted Stock Awards
The following table summarizes the Company's RSA activity during the years ended December 31, 2023, 2022 and 2021:
Number of SharesWeighted-Average Grant Date Fair Value
Balance December 31, 202057,448 $11.75 
Granted44,708 $29.30 
Forfeited(8,532)$29.30 
Vested(57,448)$11.75 
Balance December 31, 202136,176 $29.30 
Granted35,244 $37.17 
Vested(36,176)$29.30 
Balance December 31, 202235,244 $37.17 
Granted28,946 $44.44 
Vested(35,244)$37.17 
Balance December 31, 202328,946 $44.44 
Schedule of Restricted Stock Units
The following table summarizes the Company's Time-Based RSU activity during the years ended December 31, 2023, 2022 and 2021:
Number of SharesWeighted-Average Grant Date Fair Value
Balance December 31, 20201,325,862 $13.46 
Granted415,737 $27.25 
Forfeited(72,505)$17.80 
Vested(671,643)$13.99 
Balance December 31, 2021997,451 $18.54 
Granted377,804 $35.40 
Forfeited(106,570)$31.35 
Vested(478,906)$16.42 
Balance December 31, 2022789,779 $26.16 
Granted213,388 $50.74 
Forfeited(61,848)$36.75 
Vested(322,483)$21.38 
Balance December 31, 2023618,836 $36.07 
The following table summarizes the Company's Performance-Based RSU award activity during the years ended December 31, 2023 and 2022 and 2021:
Number of SharesWeighted-Average Grant Date Fair Value
Balance December 31, 2020593,388 $14.88 
Granted977,645 $33.21 
Forfeited(23,753)$27.92 
Vested(10,886)$14.70 
Balance December 31, 20211,536,394 $26.34 
Granted745,079 $42.34 
Forfeited(74,071)$41.66 
Vested(313,152)$16.45 
Balance December 31, 20221,894,250 $33.67 
Granted376,826 $69.52 
Forfeited(37,451)$47.52 
Vested(293,934)$16.34 
Balance December 31, 20231,939,691 $42.95 
Schedule of Stock Option Awards
The following table summarizes the Company's stock option activity during the years ended December 31, 2023, 2022 and 2021:
WillScot OptionsWeighted-Average Exercise Price per ShareConverted
Mobile Mini Options
Weighted-Average Exercise Price per Share
Balance December 31, 2020534,188 $13.60 2,031,455 $14.78 
Forfeited— $— (6,240)$12.19 
Exercised— $— (497,572)$15.21 
Balance at December 31, 2021534,188 $13.60 1,527,643 $14.66 
Exercised— $— (663,367)$16.93 
Balance at December 31, 2022534,188 $13.60 864,276 $12.91 
Exercised— $— (35,030)$14.21 
Balance at December 31, 2023534,188 $13.60 829,246 $12.86 
Fully vested and exercisable options, December 31, 2023
534,188 $13.60 829,246 $12.86