Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statements of Comprehensive Income
Net income	$ 64,975	$ 147,111	$ 137,861
Other comprehensive income, net of income taxes
Foreign currency translation	(2,523)	(5,285)	8,305
Unrealized loss on marketable securities			(2)
Minimum benefit retirement liability	75	(697)	1,163
Comprehensive income	62,527	141,129	147,327
Comprehensive income attributable to noncontrolling interest	34	86
Comprehensive income attributable to Advanced Energy Industries, Inc.	$ 62,493	$ 141,043	$ 147,327