Industry Segments and Geographic Information - Geographic Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues:	$ 599,111	$ 626,262	$ 553,213
Total identifiable assets	605,195	478,961
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues:	399,141	417,662	391,964
Reportable Geographical Components | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues:	399,141	417,663	391,964
Total identifiable assets	444,064	318,501
Reportable Geographical Components | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues:	112,940	116,838	89,077
Total identifiable assets	79,312	85,948
Reportable Geographical Components | South America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues:	56,574	57,700	30,560
Total identifiable assets	66,912	57,440
Reportable Geographical Components | Canada and Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues:	343	1,863	2,213
Total identifiable assets	679	800
Reportable Geographical Components | Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues:	87	300	2,826
Total identifiable assets	3,175	3,386
Reportable Geographical Components | Middle East, Asia and other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues:	30,026	31,898	$ 36,573
Total identifiable assets	$ 11,053	$ 12,886