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Reverse Recapitalization - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Sep. 28, 2020
Nov. 20, 2019
Dec. 31, 2020
Oct. 31, 2020
Dec. 31, 2019
Nov. 21, 2019
Nov. 19, 2019
Dec. 31, 2018
Dec. 31, 2017
Business Acquisition [Line Items]                  
Percent of shareholder cash election on stock issuable   70.00%              
Number of shares repurchased (in shares)   36,157              
Sale of stock (in usd per share) $ 10.50     $ 10.50          
Common stock issued $ 79.2                
Repurchase price (in usd per share)   $ 177              
Shares outstanding (in shares)   3,610,705              
TPG Holdings                  
Business Acquisition [Line Items]                  
Sale of stock (in usd per share)   $ 10.30              
TPG Holdings | Accel                  
Business Acquisition [Line Items]                  
Purchase price (in usd per share)   $ 177              
Warrants                  
Business Acquisition [Line Items]                  
Cash election (in shares)     2,444,444            
Warrants | TPG Holdings                  
Business Acquisition [Line Items]                  
Number of shares acquired (in shares)   4,888,889              
Common Stock | Class A-2 Common Stock                  
Business Acquisition [Line Items]                  
Cash election (in shares)     3,000,000            
Common Stock | TPG Holdings | Class A-1 Common Stock                  
Business Acquisition [Line Items]                  
Number of shares acquired (in shares)   7,500,000              
Common Stock | TPG Holdings | Class A-2 Common Stock                  
Business Acquisition [Line Items]                  
Number of shares acquired (in shares)   2,000,000              
Common Stock | Class A-1 Common Stock                  
Business Acquisition [Line Items]                  
Shares outstanding (in shares)           76,637,470      
Shares issued (in shares)     93,379,508   76,637,470 76,637,470   58,491,281 58,459,396
Common Stock | Class A-2 Common Stock                  
Business Acquisition [Line Items]                  
Shares outstanding (in shares)           4,999,999      
Shares issued (in shares)           4,999,999 5,000,000    
Warrants | Class A-1 Common Stock                  
Business Acquisition [Line Items]                  
Shares outstanding (in shares)           22,333,308      
Shares issued (in shares)           22,333,308      
Investment Private Placement | Class A-1 Common Stock                  
Business Acquisition [Line Items]                  
Sale of stock (in usd per share)   $ 10.22              
Sale of common stock, shares issued (in shares)   4,696,675              
Common stock issued   $ 48.0