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NET INCOME PER COMMON SHARE
 6 Months Ended
Jun. 30, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]  
Earnings Per Share [Text Block]
15.
NET INCOME PER COMMON SHARE:
Basic net income per common share is computed by dividing net income by the weighted-average number of shares of common stock outstanding for the period excluding unvested restricted stock awards, restricted stock units and performance units. Diluted net income per common share reflects the potential dilution from the exercise or conversion of securities into common stock, the effect of unvested restricted stock awards, restricted stock units and performance units, and the impact of shares to be issued under the ESPP.
The following table is a reconciliation of net income and the shares used in calculating basic and diluted net income per common share for the three and six months ended June 30, 2014 and 2013 (in thousands, except share and per share data):
 
 
Three Months Ended June 30,
 
Six Months ended June 30,
 
 
2014
 
2013
 
2014
 
2013
Numerator:
 
 
 
 
 
 
 
 
Net income
 
$
20,422

 
$
15,382

 
$
24,443

 
$
10,624

Denominator:
 
 
 
 
 
 
 
 
Weighted average common shares outstanding – Basic
 
46,266,142

 
45,859,286

 
46,222,146

 
45,841,446

Effect of dilutive shares:
 
 
 
 
 
 
 
 
Common stock equivalents arising from stock options and ESPP
 
249,618

 
498,802

 
262,434

 
503,908

Restricted stock awards and units and performance units
 
98,966

 
138,032

 
148,402

 
178,186

Weighted average common shares outstanding – Diluted
 
46,614,726

 
46,496,120

 
46,632,982

 
46,523,540

Net income per common share:
 
 
 
 
 
 
 
 
Basic
 
$
0.44

 
$
0.34

 
$
0.53

 
$
0.23

Diluted
 
$
0.44

 
$
0.33

 
$
0.52

 
$
0.23


For the three months ended June 30, 2014 and 2013, the combined effects of unvested restricted stock awards, restricted stock units and performance unit awards of 232,245 and 242,891, respectively, were excluded from the calculation of diluted EPS as their impact would have been antidilutive as the units would not be issued if the end of the reporting period was the end of the performance period. For the six months ended June 30, 2014 and 2013, the combined effects of unvested restricted stock awards, restricted stock units and performance units of 286,225 and 227,088, respectively, and the impact of shares to be issued under the ESPP, which was minor, were excluded from the calculation of diluted EPS as their impact would have been antidilutive.