Business Segments and Geographic Information - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) Segment	Mar. 31, 2019 USD ($)	Dec. 31, 2019 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	$ 2,260	$ 2,596
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	$ 1,000	1,400
Investment in joint venture	8,900		$ 12,300
GEO Amey
Schedule Of Equity Method Investments [Line Items]
Equity in earnings (losses) of affiliates, net of income tax provision	1,200	$ 1,200
Advances to affiliate	$ 6,500		$ 5,700