Quarterly report pursuant to Section 13 or 15(d)

Contract Assets and Liabilities - Cost and Estimated Earnings Compared to Billings on Uncompleted Contracts (Details)

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Contract Assets and Liabilities - Cost and Estimated Earnings Compared to Billings on Uncompleted Contracts (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Sep. 30, 2022
Revenue from Contract with Customer [Abstract]    
Costs on uncompleted contracts $ 1,338,267 $ 1,520,510
Estimated earnings to date on uncompleted contracts 130,243 146,459
Costs and estimated earnings to date on uncompleted contracts 1,468,510 1,666,969
Billings to date on uncompleted contracts (1,493,262) (1,690,175)
Net billings in excess of costs and estimated earnings on uncompleted contracts $ (24,752) $ (23,206)