XML 12 R3.htm IDEA: XBRL DOCUMENT v3.21.2
CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Statement of Financial Position [Abstract]        
Balance at beginning of year $ 8,642   $ 8,745 $ 16,511
Capital stock, par value (in dollars per share) $ 0   $ 0  
Capital stock, issued (in shares) 639,750,620 641,419,578 606,329,598