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Accrued Liabilities (Tables)
 12 Months Ended
Sep. 30, 2020
Payables and Accruals [Abstract]  
Schedule of Accrued Liabilities
Accrued liabilities at September 30 consist of:
20202019
Accrued employee compensation and benefits$5,476 $4,238 
Accrued workers’ compensation546 181 
Contract liabilities636 382 
Other accrued liabilities1,632 756 
Total accrued liabilities$8,290 $5,557