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Stock Options and Awards (Tables)
 12 Months Ended
Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
The following table summarizes stock-based compensation expense in the Company's consolidated statements of operations:
 
Years ended
 
September 30, 2017
 
September 30, 2016
 
(Amounts in thousands)
Cost of sales
$
6

 
$
2

Engineering and development
24

 
6

Selling, general and administrative
547

 
406

Total
$
577

 
$
414

 
 
 
 
Share-based Compensation, Stock Options, Activity [Table Text Block]
The following tables provide summary data of stock option award activity:
 
Number
of Shares
 
Weighted
average
exercise
price
 
Weighted
Average
Remaining
Contractual
Term
 
Aggregate
Intrinsic
Value
(in thousands)
 
 
 
 
 
 
 
 
Outstanding at September 30, 2015
55,126

 
$
6.43

 
—

 
—

Granted
—

 
—

 
—

 
—

Expired
(17,500
)
 
$
6.61

 
—

 
—

Forfeited
—

 
—

 
—

 
—

Exercised
(14,000
)
 
6.20

 
—

 
—

Outstanding at September 30, 2016
23,626

 
$
5.76

 
—

 
—

Granted
—

 
—

 
—

 
—

Expired
(9,250
)
 
$
9.30

 
—

 
—

Forfeited
—

 
—

 
—

 
—

Exercised
(5,000
)
 
2.99

 
—

 
—

Outstanding at September 30, 2017
9,376

 
$
4.49

 
1.35 Years

 
$
62

Exercisable at September 30, 2017
9,376

 
$
4.49

 
1.35 Years

 
$
62

Vested and expected to vest at September 30, 2017
9,376

 
$
4.49

 
1.35 Years

 
$
62
Schedule of Nonvested Share Activity [Table Text Block]
The following table provides summary data of nonvested stock award activity:
 
 
Number of
nonvested
shares
 
Weighted
Average
grant date
Fair
Value
 
Weighted
Average
Remaining
Contractual
Term 
 
Aggregate
Intrinsic
Value 
(in thousands)
 
 
Nonvested shares outstanding at September 30, 2015
130,457

 
$
6.08

 
2.12 Years

 
$
714

Activity in 2016:
 

 
 

 
 

 
 

Granted
105,395

 
$
6.47

 
—

 
—

Vested
(48,444
)
 
$
6.33

 
—

 
—

Forfeited
(21,700
)
 
7.38

 
—

 
—

Nonvested shares outstanding at September 30, 2016
165,708

 
$
6.38

 
2.20 Years

 
$
1,695

Activity in 2017:
 

 
 

 
 

 
 

Granted
94,000

 
$
10.18

 
—

 
—

Vested
(71,587
)
 
$
6.59

 
—

 
—

Forfeited
(8,300
)
 
7.11

 
—

 
—

Nonvested shares outstanding at September 30, 2017
179,821

 
$
8.64

 
2.23 Years

 
$
1,987

Vested at September 30, 2017
250,864

 
$
5.96

 
0.31 Years

 
$
2,772

Vested and expected to vest at September 30, 2017
430,685

 
$
7.08

 
1.11 Years

 
$
4,759