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Intangible Assets (Tables)
6 Months Ended
Mar. 31, 2021
Finite-Lived Intangible Assets, Net [Abstract]  
Schedule of intangible assets
Intangible assets consist of the following:  
  March 31, 2021September 30, 2020
(dollars in thousands)Useful
Life
(in years)
Gross
Carrying
Amount
Accumulated
Amortization
Net
Carrying
Amount
Gross
Carrying
Amount
Accumulated
Amortization
Net
Carrying
Amount
Contract intangibles6$3,100 $(1,421)$1,679 $3,100 $(1,162)$1,938 
Technology52,700 (1,485)1,215 2,700 (1,215)1,485 
Patent and trademarks
7 - 10
2,350 (1,134)1,216 2,329 (994)1,335 
Total intangible assets $8,150 $(4,040)$4,110 $8,129 $(3,371)$4,758 
Schedule of future expected amortization of intangible assets
Future expected amortization of intangible assets at March 31, 2021, is as follows: 

(in thousands)Expected Amortization Expense
Years ending September 30,
Remainder of 2021
$668 
20221,330 
20231,186 
2024647 
2025279 
Total$4,110