Earning Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| Computation of Earnings Per Share [Line Items] | ||||
| Net income | $ 3,180 | $ 1,868 | $ 8,671 | $ 4,845 |
| Undistributed earnings attributable to participating securities | (53) | (47) | (144) | (121) |
| Net income allocated to common stockholders | $ 3,127 | $ 1,821 | $ 8,527 | $ 4,724 |
| Weighted average shares outstanding, basic | 8,571,225 | 8,468,527 | 8,560,589 | 8,453,768 |
| Effect of dilutive shares | 284,340 | 221,465 | 268,826 | 205,419 |
| Weighted average shares outstanding, assuming dilution | 8,855,565 | 8,689,992 | 8,829,415 | 8,659,187 |
| Basic EPS | $ 0.36 | $ 0.22 | $ 1.00 | $ 0.56 |
| Effect of dilutive shares | (0.01) | (0.01) | (0.03) | (0.01) |
| Diluted EPS | $ 0.35 | $ 0.21 | $ 0.97 | $ 0.55 |