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Earnings (Loss) Per Share (Tables)
 3 Months Ended
Dec. 31, 2017
Earnings Per Share [Abstract]  
Diluted earnings per share
Diluted earnings per share is calculated using the treasury stock method.

 
 
Three Months Ended
 
 
December 31,
 
December 31,
 
 
2017
 
2016
Numerator:
 
 
 
 
    Net income (loss)
 
$
(2,851
)
 
$
324

Denominator:
 
 
 
 
Denominator for basic net income per share - weighted-average outstanding shares
 
11,837

 
11,201

Effect of dilutive securities:
 
 
 
 
Stock options and restricted stock
 
—

 
1,489

Denominator for diluted net income per share - weighted-average outstanding shares
 
11,837

 
12,690

 
 
 
 
 
Net income (loss) per share - basic
 
$
(0.24
)
 
$
0.03

Net income (loss) per share-diluted
 
$
(0.24
)
 
$
0.03