Annual report pursuant to Section 13 and 15(d)

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

v3.20.2
Contract Assets and Liabilities - Reconciliation of Net Billings in Excess of Costs and Estimated Earnings (Detail)
$ in Thousands
 12 Months Ended
Sep. 30, 2020
USD ($)
Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts [Abstract]  
Contract asset, ending balance $ 7,873
Changes in revenue billed, contract price or cost estimates (4,157)
Contract asset, beginning balance 12,030
Billings in Excess of Costs and Estimated Earnings on Uncompleted Contracts [Abstract]  
Billings in excess of costs, beginning balance (31,115)
Changes in revenue billed, contract price or cost estimates (2,589)
Billings in excess of costs, ending balance (33,704)
Net Billings in Excess of Costs and Estimated Earnings on Uncompleted Contracts [Abstract]  
Net billings in excess of costs, beginning balance (19,085)
Changes in revenue billed, contract price or cost estimates (6,746)
Net billings in excess of costs, ending balance $ (25,831)