XML 53 R36.htm IDEA: XBRL DOCUMENT v3.22.4
FAIR VALUE MEASUREMENTS - EQUITY INVESTMENT (Details) - USD ($)
3 Months Ended
Aug. 03, 2020
Mar. 31, 2021
Dec. 31, 2007
Equity Investments [Line Item]      
Number of shares owned 35,990,825 0 13,842,625
Business Combination Cost Of Acquired Entity Equity Interests Issued And Issuable Fair Value Method we received 13 BARD1 shares for every five shares of Sienna ordinary shares, resulting in our ownership of 35,990,825 shares of BARD1.    
Realized investment gains (losses)   $ 1,233,000  
Maximum      
Equity Investments [Line Item]      
Cost method investments ownership percentage     20.00%
Equity investment      
Equity Investments [Line Item]      
Cost method investments cost basis     $ 0