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Subsequent Events (Details) - Subsequent Event
$ in Thousands
Jul. 02, 2021
USD ($)
shares
Subsequent Event [Line Items]  
Alclear common units purchased (in shares) | shares 15,180,000
Restricted Stock Units (RSUs)  
Subsequent Event [Line Items]  
Granted (in shares) | shares 1,169,140
Future unrecognized expense | $ $ 45,853
IPO  
Subsequent Event [Line Items]  
Net IPO proceeds | $ $ 444,698