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Construction Joint Ventures - SEMA Financials (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Operating income	$ 107,287	$ 94,892	$ 37,751
Net income	62,645	42,306	$ 39,901
Joint Ventures | Variable Interest Entity, Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Revenues	55,373	15,800
Operating income	5,598	1,271
Net income	$ 5,605	$ 1,278
RLW | Joint Ventures
Schedule of Equity Method Investments [Line Items]
Ownership percentage	51.00%

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