General form of registration statement for all companies including face-amount certificate companies

Stock-Based Compensation - Stock option plan (Details)

v3.21.2
Stock-Based Compensation - Stock option plan (Details) - SHAPEWAYS, INC - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Shares Underlying Options          
Outstanding at the beginning 8,247,340 7,550,632 7,550,632 6,679,080  
Granted 37,000 2,185,299 2,251,449 1,814,392  
Forfeited (223,333)   (1,237,602) (848,494)  
Exercised (134,877) (171,546) (317,139) (94,346)  
Outstanding at the end 7,926,130   8,247,340 7,550,632 6,679,080
Exercisable at the end 5,396,377   4,936,601    
Weighted Average Exercise Price          
Outstanding at the beginning (in dollars per share) $ 0.44 $ 0.44 $ 0.44 $ 0.46  
Granted (in dollars per share) 0.28   0.37 0.37  
Forfeited (in dollars per share) 0.36   0.39 0.40  
Exercised (in dollars per share) 0.51   0.27 0.35  
Outstanding at the end (in dollars per share) 0.44   0.44 $ 0.44 $ 0.46
Exercisable at the end (in dollars per share) $ 0.48   $ 0.49    
Weighted Average Remaining Contractual Term and Aggregate Intrinsic Value          
Outstanding (in years) 6 years 4 months 2 days   6 years 8 months 19 days 6 years 9 months 7 days 6 years 4 months 6 days
Exercisable at the end (in years) 5 years 5 months 1 day   5 years 4 months 24 days    
Exercised 134,877 171,546 317,139 94,346