XML 42 R30.htm IDEA: XBRL DOCUMENT v3.21.1
Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Accounting Policies [Abstract]    
Income tax expense/(benefit) from continuing operations $ 0 $ 0
Change in accounting principle, accounting standards update, adopted [true false] true  
Change in accounting principle, accounting standards update, adoption date Jan. 01, 2021  
Change in accounting principle, accounting standards update, immaterial effect [true false] true  
Accounting Standards Update [Extensible List] us-gaap:AccountingStandardsUpdate201912Member us-gaap:AccountingStandardsUpdate201613Member