Operating Segments and Related Information (Details 5) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 467,313	$ 450,923
Industrial Technologies
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	274,864	276,415
Industrial Technologies | United States
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	120,678	103,337
Industrial Technologies | Europe [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	82,194	65,335
Industrial Technologies | Asia [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	41,422	73,387
Industrial Technologies | Mid_East/Africa [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	14,747	18,027
Industrial Technologies | Canada/Latin America
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	15,823	16,329
Defense Technologies
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	192,449	174,508
Defense Technologies | United States
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	135,105	115,947
Defense Technologies | Europe [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	22,549	19,476
Defense Technologies | Asia [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	12,571	11,864
Defense Technologies | Mid_East/Africa [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	18,565	25,128
Defense Technologies | Canada/Latin America
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	3,659	2,093
Total Segments [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	467,313	450,923
Total Segments [Member] | United States
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	255,783	219,284
Total Segments [Member] | Europe [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	104,743	84,811
Total Segments [Member] | Asia [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	53,993	85,251
Total Segments [Member] | Mid_East/Africa [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	33,312	43,155
Total Segments [Member] | Canada/Latin America
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 19,482	$ 18,422