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

Geographic Information and Significant Customers - Net Revenues by Majority Companies (Details)

v3.21.2
Geographic Information and Significant Customers - Net Revenues by Majority Companies (Details) - USD ($)
$ in Thousands
 6 Months Ended 11 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Revenue, Major Customer [Line Items]      
Revenues $ 15,020 $ 21,352 $ 17,393
NASA      
Revenue, Major Customer [Line Items]      
Revenues $ 15,020 $ 21,352 $ 17,393