XML 29 R18.htm IDEA: XBRL DOCUMENT v3.21.2
Recently Issued Accounting Standards (Policies)
9 Months Ended
Sep. 30, 2021
Recently Issued Accounting Standards [Abstract]  
Recently Issued Accounting Standards
During the nine months ended September 30, 2021, there were no additions to or changes in the critical accounting policies disclosed in the 2020 Form 10-K.