XML 74 R59.htm IDEA: XBRL DOCUMENT v3.8.0.1
Calculations of Basic and Diluted Income per Common Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Earnings Per Share Disclosure [Line Items]      
Net income - Basic and Diluted $ 2,154 $ 15,720 $ 12,278
Weighted-average shares outstanding - Basic 14,505 14,174 13,850
Effect of dilutive securities:      
Stock options and other stock awards 450 375 416
Weighted-average shares outstanding - Diluted 14,955 14,549 14,266
Basic income per common share $ 0.15 $ 1.11 $ 0.89
Diluted income per common share $ 0.14 $ 1.08 $ 0.86