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Liabilities
 12 Months Ended
Sep. 30, 2022
Liabilities [Abstract]  
Liabilities Liabilities
Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consisted of the following at September 30, 2022 and 2021 (in thousands):
September 30,
20222021
Accrued payroll and benefits$12,980 $19,302 
Accrued insurance costs3,081 3,444 
Unfavorable contract liabilities4,824 — 
Other current liabilities7,599 3,713 
Total accrued expenses and other current liabilities$28,484 $26,459 
Unfavorable contract liabilities represent liabilities acquired as part of the Company's business acquisitions during the fiscal year ended September 30, 2022, as described in Note 4 - Business Acquisitions. Total amortization expense related to the acquired unfavorable contract liabilities was $4.1 million, $0.0 million and $0.0 million for the fiscal years ended September 30, 2022, 2021 and 2020, respectively.
Other Long-Term Liabilities
Other long-term liabilities consisted of the following at September 30, 2022 and 2021 (in thousands):
September 30,
20222021
Accrued insurance costs$8,210 $6,497 
Other3,456 4,422 
Total other long-term liabilities$11,666 $10,919