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

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

v3.21.2
Schedule I - Condensed Financial Information of Registrant - Statements of Cash Flows (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Condensed Cash Flow Statements          
Cash Flows from Operating Activities $ 58,434 $ 17,838 $ 21,216 $ 29,433 $ 12,058
Cash Flows from Investing Activities          
Net cash (used in) investing activities (29,822) (6,545) (9,751) (63,195) (12,968)
Cash Flows from 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 5,514 383 780 177 7
Proceeds from common stock issued under employee purchase plan     424   100
Net cash provided by (used in) financing activities 258,033 (4,911) 10,385 15,045 22,901
Effect of exchange rate changes on cash and cash equivalents (173) (38) 203 23 (76)
Net increase in cash, cash equivalents, and restricted cash 286,472 6,344 22,053 (18,694) 21,915
Cash, cash equivalents, and restricted cash - Beginning of period 33,395 11,342 11,342 30,036 8,121
Cash, cash equivalents, and restricted cash - End of period 319,867 17,686 33,395 11,342 30,036
Noncash investing and financing transaction          
Exchange of common stock for preferred stock     260,686    
Parent Company | Reportable Legal Entities          
Condensed Cash Flow Statements          
Cash Flows from Operating Activities     18,214 (94) (108)
Cash Flows from Investing Activities          
Transfer of funds to subsidiary     (83,000) (1,787)  
Net cash (used in) investing activities     (83,000) (1,787)  
Cash Flows from 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     780 177  
Proceeds from common stock issued under employee purchase plan     424   100
Net cash provided by (used in) financing activities     71,162 177 100
Effect of exchange rate changes on cash and cash equivalents       (67) 3
Net increase in cash, cash equivalents, and restricted cash     6,376 (1,771) (5)
Cash, cash equivalents, and restricted cash - Beginning of period $ 6,418 $ 42 42 1,813 1,818
Cash, cash equivalents, and restricted cash - End of period     6,418 $ 42 $ 1,813
Noncash investing and financing transaction          
Exchange of common stock for preferred stock     $ 260,686