Annual report pursuant to Section 13 and 15(d)

Capitalized Software Costs, Net

Capitalized Software Costs, Net
12 Months Ended
Sep. 30, 2021
Research and Development [Abstract]  
Capitalized Software Costs, Net CAPITALIZED SOFTWARE COSTS, NET
Table 18: Details of Capitalized Software, Net
As of September 30,
2021 2020
(in thousands)
Capitalized software $ 139,145  $ 120,677 
Accumulated amortization (96,277) (82,644)
Capitalized software, net $ 42,868  $ 38,033 
Amortization expense related to capitalized software for the years ended September 30, 2021, 2020, and 2019 was $12.3 million, $9.6 million, and $7.2 million, respectively. The majority of this amortization was recorded within our "cost of revenue" on our consolidated statements of operations.
The amortization totals above include $2.4 million and $0.6 million of costs which were capitalized and subsequently written off during the years ended September 30, 2021 and 2020, respectively. No comparable amount where recorded for the year ended September 30, 2019. These costs were related to contracts that were deemed unrecoverable. This expense was recorded within "cost of revenue" on our consolidated statements of operations.