Annual report pursuant to Section 13 and 15(d)

Schedule I - Condensed Financial Information of Registrant - Statements of Cash Flows (Details)

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Schedule I - Condensed Financial Information of Registrant - Statements of Cash Flows (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Condensed Cash Flow Statements      
Operating activities: $ 82,749 $ 21,216 $ 29,433
Investing activities:      
Net cash used in investing activities (158,614) (9,751) (63,195)
Financing activities      
Repurchase of vested options   (15,506)  
Proceeds from Series A preferred stock issuance, net of issuance costs   346,150  
Payments to shareholders for preferred stock Series A   (260,686)  
Proceeds from common stock issued upon exercise of stock options 12,440 780 177
Proceeds from common stock issued under employee purchase plan 404 424  
Proceeds from issuance of common stock upon initial public offering 269,390    
Proceeds from issuance of common stock in connection to concurrent private placement 30,000    
Payments for offering costs (22,069) (3,610)  
Shares repurchased for settlement of employee tax withholdings 1,802    
Net cash provided by financing activities 264,395 10,385 15,045
Effect of exchange rate changes on cash and cash equivalents (200) 203 23
Net increase (decrease) in cash, cash equivalents, and restricted cash 188,330 22,053 (18,694)
Cash, cash equivalents, and restricted cash-Beginning of period 33,395 11,342 30,036
Cash, cash equivalents, and restricted cash-End of period 221,725 33,395 11,342
Noncash investing and financing transactions:      
Common stock issued in connection with acquisition 22,526    
Exchange of common stock for preferred stock   260,686  
Treasury stock reissued upon the conversion of Series A preferred stock for common stock 260,686    
Parent Company | Reportable Legal Entities      
Condensed Cash Flow Statements      
Operating activities: 67,294 18,214 (94)
Investing activities:      
Transfer of funds to subsidiary (179,825) (83,000) (1,787)
Net cash used in investing activities (179,825) (83,000) (1,787)
Financing activities      
Repurchase of vested options   (15,506)  
Proceeds from Series A preferred stock issuance, net of issuance costs   346,150  
Payments to shareholders for preferred stock Series A   (260,686)  
Proceeds from common stock issued upon exercise of stock options 12,440 780 177
Proceeds from common stock issued under employee purchase plan 404 424  
Proceeds from issuance of common stock upon initial public offering 269,390    
Proceeds from issuance of common stock in connection to concurrent private placement 30,000    
Payments for offering costs (17,214)    
Shares repurchased for settlement of employee tax withholdings (1,802)    
Net cash provided by financing activities 293,218 71,162 177
Effect of exchange rate changes on cash and cash equivalents     (67)
Net increase (decrease) in cash, cash equivalents, and restricted cash 180,687 6,376 (1,771)
Cash, cash equivalents, and restricted cash-Beginning of period 6,418 42 1,813
Cash, cash equivalents, and restricted cash-End of period 187,105 6,418 $ 42
Noncash investing and financing transactions:      
Common stock issued in connection with acquisition 22,526    
Exchange of common stock for preferred stock   $ 260,686  
Treasury stock reissued upon the conversion of Series A preferred stock for common stock 260,686    
Due to consolidated subsidiaries $ 68,940