XML 33 R23.htm IDEA: XBRL DOCUMENT v3.21.2
Basis of Presentation of Interim Period Statements - Summary of Basic and Diluted Common Shares Outstanding (Detail) - shares
shares in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Weighted Average Number Of Shares Outstanding Diluted Disclosure Items [Abstract]        
Weighted average number of basic shares outstanding 7,545 7,639 7,559 7,572
Effect of dilutive securities 62 70 83 116
Weighted average number of diluted shares outstanding 7,607 7,709 7,642 7,688