Quarterly report pursuant to Section 13 or 15(d)

Earnings per Share - Computation of Earnings Per Share (Details)

v3.7.0.1
Earnings per Share - Computation of Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Numerator—basic and diluted:    
Net income $ 5,932 $ 2,521
Denominator:    
Weighted-average common shares - basic common stock 20,489,532 19,827,669
Weighted-average common shares - diluted common stock 21,579,721 20,840,367
Net income per share - basic common stock $ 0.29 $ 0.13
Net income per share - diluted common stock $ 0.27 $ 0.12
Weighted-average number of shares used in calculating net income per share attributable to common stockholders:    
Weighted-average common shares - basic common stock 20,489,532 19,827,669
Stock options 1,090,189 1,012,698
Weighted-average common shares - diluted common stock 21,579,721 20,840,367
Shares excluded from diluted weighted-average shares:    
Shares excluded from diluted weighted-average shares 25,700 773,033
Stock options    
Shares excluded from diluted weighted-average shares:    
Shares excluded from diluted weighted-average shares 25,700 773,033