Revenue from Contracts with Customers - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) project	Jun. 30, 2021 USD ($) project	Jun. 30, 2022 USD ($) project	Jun. 30, 2021 USD ($) project	Dec. 31, 2021 USD ($)
Disaggregation of Revenue [Line Items]
Term of revenue contracts			six months to two years
Percentage completed of certain milestones			10.00%
Net amount of unresolved change orders and claims	$ 38,600		$ 38,600		$ 38,100
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligations, expected timing of satisfaction, period	24 months		24 months
GCR
Disaggregation of Revenue [Line Items]
Number of projects | project	1	1	1	2
Revision amount for gross profit impact on contract estimates (more than)	$ 500	$ (500)	$ 500
Total net gross profits write ups (downs)	1,300	$ (1,000)	1,300	$ (1,500)
GCR | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Disaggregation of Revenue [Line Items]
Remaining performance obligations, amount	$ 308,800		$ 308,800
Revenue, remaining performance obligations, percentage	50.00%		50.00%
Revenue, remaining performance obligations, expected timing of satisfaction, period	6 months		6 months
GCR | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligations, percentage	40.00%		40.00%
Revenue, remaining performance obligations, expected timing of satisfaction, period	1 year 6 months		1 year 6 months
ODR | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Disaggregation of Revenue [Line Items]
Remaining performance obligations, amount	$ 102,100		$ 102,100
Revenue, remaining performance obligations, percentage	66.00%		66.00%
Revenue, remaining performance obligations, expected timing of satisfaction, period	6 months		6 months
ODR | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligations, percentage	27.00%		27.00%
Revenue, remaining performance obligations, expected timing of satisfaction, period	1 year 6 months		1 year 6 months