Acquisitions - Summary of Results of Operations of Businesses Acquired From Dates of Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Business Acquisition [Line Items]
Gross Contract Revenue	$ 76,100	$ 52,461
Pre-tax Net Income	537	$ 1,457
McMahon Associates, Inc. (“McMahon”)
Business Acquisition [Line Items]
Gross Contract Revenue	10,414
Pre-tax Net Income	1,298
Project Design Consultants, LLC (“PDC”)
Business Acquisition [Line Items]
Gross Contract Revenue	3,106
Pre-tax Net Income	$ 639