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Earnings Per Share (Tables)
 12 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Computation of Basic and Diluted 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
)