Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation of Interim Period Statements - Summary of Basic and Diluted Common Shares Outstanding (Detail)

v3.10.0.1
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, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Weighted Average Number Of Shares Outstanding Diluted Disclosure Items [Abstract]        
Weighted average number of basic shares outstanding 7,369 7,296 7,327 7,266
Effect of dilutive securities 274 231 325 273
Weighted average number of diluted shares outstanding 7,643 7,527 7,652 7,539