Business Segments and Geographic Information - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) Segment	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)
Schedule Of Equity Method Investments [Line Items]
Number of reportable business segments | Segment	4
Equity in earnings (losses) of affiliates, net of income tax provision	$ 2,064	$ 2,260
SACS
Schedule Of Equity Method Investments [Line Items]
Ownership percentage in entity	50.00%
Equity in earnings (losses) of affiliates, net of income tax provision	$ 900	1,000
Investment in joint venture	10,500		$ 11,100
GEO Amey
Schedule Of Equity Method Investments [Line Items]
Equity in earnings (losses) of affiliates, net of income tax provision	1,100	$ 1,200
Advances to affiliate	$ 10,600		$ 11,800