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Represents the percentage of expected costs towards the settlement that the co-defendant would pay.

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The amount of increase in liability.

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The amount of remediation expense incurred.

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Amount awarded to other party in judgment or settlement of litigation.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Commitments and Contingencies - Legal (Details) - USD ($) $ in Thousands		3 Months Ended
	Feb. 25, 2015	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Commitments and contingencies
Revenue		$ 743,243	$ 661,558
Gross Profit		$ 47,810	$ 52,460
JCG \| North Texas Tollway Authority v. James Construction Group, LLC
Commitments and contingencies
Expected remediation cost on settlement	$ 17,000
Percentage of expected costs second defendant would pay		20.00%
Percentage of expected costs Company would pay		80.00%
Remaining accrual balance		$ 6,500
Expected remediation cost	22,400
Increase in liability		500
Remediation costs		2,500
JCG \| North Texas Tollway Authority v. James Construction Group, LLC \| Maximum
Commitments and contingencies
Agreed payments by second defendant in expected remediation costs toward settlement	$ 5,400
Bonding
Commitments and contingencies
Bid and completion bonds issued and outstanding		$ 829,000		$ 648,600