Earnings Per Share (Tables)
 3 Months Ended
Apr. 30, 2018
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]  
Schedule of Earnings Per Share, Basic and Diluted
The composition of basic and diluted EPS is as follows:
 
Three months ended April 30,
 
2018
 
2017
(in thousands, except per share data)
 
 
 
Net income
$
33,699

 
$
30,654

 
 
 
 
Weighted average common shares - basic
38,281

 
37,251

Effect of dilutive securities:
 
 
 
Equity based awards
280

 
217

Weighted average common shares - diluted
38,561

 
37,468

 
 
 
 
Earnings per share:
 
 
 
Basic
$
0.88

 
$
0.82

Diluted
$
0.87

 
$
0.82


For the three months ended April 30, 2018 and 2017, there were 8,439 and zero shares, respectively, excluded from the computation of diluted earnings per share because their effect would have been antidilutive.