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Earnings Per Share
 12 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings Per Share
We compute basic earnings per share by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted earnings per common and potential common share includes the weighted average of additional shares associated with the incremental effect of dilutive restricted stock and restricted stock units, as prescribed by the FASB guidance on earnings per share.
The following table reconciles basic and diluted weighted average shares used in the computation of earnings per share (in thousands, except per share data):  
 
Year Ended September 30,
 
2019
 
2018
 
2017
Numerator:
 
 
 
 
 
Net income (loss)
$
9,890

 
$
(7,152
)
 
$
(9,486
)
Denominator:
 
 
 
 
 
Weighted average basic shares
11,571

 
11,507

 
11,453

Dilutive effect of restricted stock units
63

 
—

 
—

Weighted average diluted shares with assumed conversions
11,634

 
11,507

 
11,453

 
 
 
 
 
 
Earnings (loss) per share:
 
 
 
 
 
Basic
$
0.85

 
$
(0.62
)
 
$
(0.83
)
Diluted
$
0.85

 
$
(0.62
)
 
$
(0.83
)


For the years ended September 30, 2018 and 2017, we incurred net losses; therefore, all potential common shares were deemed to be anti-dilutive.