Quarterly report pursuant to Section 13 or 15(d)

Cash Flow Statement - Additional Information (Detail)

v3.20.4
Cash Flow Statement - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Interest paid     $ 9 $ 9
Income taxes paid     51 27
Issuance of treasury stock $ 87 $ 49    
Capital expenditures     37 10
Employee Stock Purchase Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Issuance of treasury stock     $ 87 $ 49