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Earnings Per Share (Tables)
 9 Months Ended
Jun. 30, 2018
Earnings Per Share [Abstract]  
Diluted earnings per share
Diluted earnings per share is calculated using the treasury stock method.

 
 
Three Months Ended
 
Nine Months Ended
 
 
June 30,
 
June 30,
 
 
2018
 
2017
 
2018
 
2017
Numerator:
 
 
 
 
 
 
 
 
     Net income
 
$
1,614

 
$
945

 
$
79

 
$
2,248

Denominator:
 
 
 
 
 
 
 
 
Denominator for basic net income per share - weighted-average outstanding shares
 
11,899

 
11,299

 
11,875

 
11,250

Effect of dilutive securities:
 
 
 
 
 
 
 
 
Stock options and restricted stock
 
985

 
1,146

 
997

 
1,167

Denominator for diluted net income per share - weighted-average outstanding shares
 
12,884

 
12,445

 
12,872

 
12,417

 
 
 
 
 
 
 
 
 
Net income per share - basic
 
$
0.14

 
$
0.08

 
$
0.01

 
$
0.20

Net income per share - diluted
 
$
0.13

 
$
0.08

 
$
0.01

 
$
0.18