XML 50 R40.htm IDEA: XBRL DOCUMENT v3.20.2
Equity Method Investment (Details) - USD ($)
$ in Thousands
Nov. 01, 2019
Sep. 30, 2020
Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]      
Equity method investment   $ 4,516 $ 4,892 [1]
Notch Therapeutics, Inc.      
Schedule of Equity Method Investments [Line Items]      
Payments to acquire interest in Notch $ 5,100    
Transaction cost $ 100    
Ownership percentage 25.00% 25.00%  
Equity method investment $ 5,000 $ 4,500 $ 4,900
[1] The balance sheet as of December 31, 2019 is derived from the audited financial statements as of that date.