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Intangible Assets
 3 Months Ended
Dec. 31, 2021
Finite-Lived Intangible Assets, Net [Abstract]  
Intangible Assets Intangible Assets
 
Intangible assets consist of the following:   
  December 31, 2021September 30, 2021
(in thousands)Useful
Life
(in years)		Gross
Carrying
Amount		Accumulated
Amortization		Net
Carrying
Amount		Gross
Carrying
Amount		Accumulated
Amortization		Net
Carrying
Amount
Contract intangibles
6 - 8
17,000 (2,098)14,902 3,100 (1,679)1,421 
Technology
3 - 5
5,300 (2,033)3,267 2,700 (1,755)945 
Patent and trademarks
3 - 10
2,360 (1,342)1,018 2,360 (1,273)1,087 
Total intangible assets $24,660 $(5,473)$19,187 $8,160 $(4,707)$3,453 
 
The gross carrying amount of total intangible assets increased by $16.5 million during the three months ended December 31, 2021 due to the Bid4Assets acquisition. The acquired developed software and trade name are included in the above line items of Technology and Patent and trademarks, respectively. See Note 3 - Bid4Assets Acquisition for further information.

Future expected amortization of intangible assets at December 31, 2021, is as follows: 
(in thousands)Expected Amortization Expense
Years ending September 30,
Remainder of 2022
$2,951 
20233,791 
20243,253 
20252,012 
2026 and thereafter7,180 
Total$19,187 
 
Intangible asset amortization expense was $0.8 million and $0.3 million for the three months ended December 31, 2021 and 2020, respectively.
The Company has continued to evaluate the impact of the COVID-19 pandemic on the recoverability of its long-lived assets. The Company has not identified indicators of impairment requiring an interim impairment test on material long-lived assets during the three months ended December 31, 2021.