Quarterly report pursuant to Section 13 or 15(d)

Costs and Estimated Earnings on Uncompleted Contracts - Reconciliation of Net Billings in Excess of Costs and Estimated Earnings (Detail)

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Costs and Estimated Earnings on Uncompleted Contracts - Reconciliation of Net Billings in Excess of Costs and Estimated Earnings (Detail)
$ in Thousands
 3 Months Ended
Dec. 31, 2018
USD ($)
Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts  
Contract asset, beginning balance $ 9,334
Changes in revenue billed, contract price or cost estimates 858
Contract asset, ending balance 10,192
Billings in Excess of Costs and Estimated Earnings on Uncompleted Contracts  
Contract liability, beginning balance (38,738)
Changes in revenue billed, contract price or cost estimates (733)
Contract liability, ending balance (39,471)
Net Billings in Excess of Costs and Estimated Earnings on Uncompleted Contracts  
Net billings in excess of costs, beginning balance (29,404)
Changes in revenue billed, contract price or cost estimates 125
Net billings in excess of costs, Ending balance $ (29,279)