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Intangible Assets
3 Months Ended
Dec. 31, 2017
Finite-Lived Intangible Assets, Net [Abstract]  
Intangible Assets
Intangible Assets
 
The components of identifiable intangible assets as of December 31, 2017 and September 30, 2017 are as follows:  
 
 
 
December 31, 2017
 
September 30, 2017
 
Useful
Life
(in years)
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Carrying
Amount
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Carrying
Amount
 
(dollars in thousands)
Patent and trademarks
3 - 10
 
959

 
(534
)
 
425

 
943

 
(516
)
 
427

Total intangible assets
 
 
$
959

 
$
(534
)
 
$
425

 
$
943

 
$
(516
)
 
$
427


 
Future expected amortization of intangible assets at December 31, 2017 is as follows: 
 
 
Future
Amortization
Years ending September 30,
 
(in thousands)
2018 Remaining nine months
 
$
58

2019
 
71

2020
 
69

2021
 
58

2022 and thereafter
 
169

Total
 
$
425


 
Intangible assets amortization expense was approximately $0.02 million and $0.3 million for the three months ended December 31, 2017 and 2016, respectively.