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)

v3.8.0.1
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, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Weighted Average Number Of Shares Outstanding Diluted Disclosure Items [Abstract]        
Weighted average number of basic shares outstanding 7,296 7,243 7,266 7,220
Effect of dilutive securities 231 162 273 130
Weighted average number of diluted shares outstanding 7,527 7,405 7,539 7,350