v3.21.2
Stock-based Compensation - Summary Of Restricted Stock Option Activity (Detail) - 2017 Amended Equity Incentive Plan [Member] - Restricted stock units [Member] - Bird Rides [Member] - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Shares, Beginning Balance 804,294 1,242,999  
Number of Shares, Vested (438,705) (438,705)  
Number of Shares, Ending Balance 365,589 804,294  
Number of Shares, Vested at December 31, 2020 1,433,847    
Aggregate intrinsic value, Outstanding $ 768 $ 2,558 $ 6,165
Aggregate intrinsic value, Vested at December 31, 2020 $ 3,011    
Weighted Average Grant Date Fair Value, Beginning Balance $ 0.19 $ 0.19  
Weighted Average Grant Date Fair Value, Vested 0.19 0.19  
Weighted Average Grant Date Fair Value, Ending Balance 0.19 $ 0.19  
Weighted Average Grant Date Fair Value, Vested at December 31, 2020 $ 0.19