Annual report pursuant to Section 13 and 15(d)

Contract Assets and Liabilities - Reconciliation of Net Billings in Excess of Costs and Estimated Earnings (Details)

v3.21.2
Contract Assets and Liabilities - Reconciliation of Net Billings in Excess of Costs and Estimated Earnings (Details)
$ in Thousands
 12 Months Ended
Sep. 30, 2021
USD ($)
Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts  
Contract asset, beginning balance $ 7,873
Changes in revenue billed, contract price or cost estimates 15,150
Contract asset, ending balance 23,023
Billings in Excess of Costs and Estimated Earnings on Uncompleted Contracts  
Contract liability, beginning balance (33,704)
Changes in revenue billed, contract price or cost estimates (15)
Contract liability, ending balance (33,719)
Net Billings in Excess of Costs and Estimated Earnings on Uncompleted Contracts  
Net billings in excess of costs, beginning balance (25,831)
Changes in revenue billed, contract price or cost estimates 15,134
Net billings in excess of costs, ending balance $ (10,697)