Revenue from Contracts with Customers - Contract Assets and Liabilities (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Contract Assets
Costs and estimated earnings in excess of billings, less allowance for credit losses	$ 32,554,000		$ 27,211,000
Contract Liabilities
Billings in excess of costs and estimated earnings and deferred revenue	775,302,000		$ 548,293,000
Revenue related to our contract liabilities	482,900,000	$ 277,500,000
Impairment losses	$ 0	$ 0