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

Summary of Significant Accounting Policies - Revenue by Geographic Area (Details)

v3.21.2
Summary of Significant Accounting Policies - Revenue by Geographic Area (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Disaggregation of Revenue [Line Items]            
Revenue $ 1,172 $ 6,399 $ 8,318 $ 9,960 $ 18,975 $ 15,223
United States            
Disaggregation of Revenue [Line Items]            
Revenue     8,246 8,631 13,046 15,223
East Asia/Oceania            
Disaggregation of Revenue [Line Items]            
Revenue     $ 72 $ 1,329 $ 5,929 $ 0