Operating Segments and Related Information (Details 5) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 450,923	$ 444,736
Industrial Technologies
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	276,415	271,386
Industrial Technologies | United States
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	103,337	133,422
Industrial Technologies | Europe [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	65,335	73,864
Industrial Technologies | Asia [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	73,387	41,393
Industrial Technologies | Mid_East/Africa [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	18,027	9,865
Industrial Technologies | Canada/Latin America
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	16,329	12,842
Defense Technologies
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	174,508	173,350
Defense Technologies | United States
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	115,947	109,304
Defense Technologies | Europe [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	19,476	26,596
Defense Technologies | Asia [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	11,864	17,386
Defense Technologies | Mid_East/Africa [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	25,128	17,407
Defense Technologies | Canada/Latin America
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	2,093	2,657
Total Segments [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	450,923	444,736
Total Segments [Member] | United States
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	219,284	242,726
Total Segments [Member] | Europe [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	84,811	100,460
Total Segments [Member] | Asia [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	85,251	58,779
Total Segments [Member] | Mid_East/Africa [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	43,155	27,272
Total Segments [Member] | Canada/Latin America
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 18,422	$ 15,499