Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Total sales, net	$ 788,948	$ 718,892	$ 671,012
Total cost of sales	473,296	353,285	314,631
Gross profit	315,652	365,607	356,381
Operating expenses:
Research and development	101,503	76,008	57,999
Selling, general and administrative	142,555	108,033	93,262
Amortization of intangible assets	12,168	5,774	4,350
Restructuring expense	5,038	4,239
Total operating expenses	261,264	194,054	155,611
Operating income	54,388	171,553	200,770
Other income (expense), net	12,806	823	(2,579)
Income from continuing operations, before income taxes	67,194	172,376	198,191
Provision for income taxes	10,699	25,227	62,090
Income from continuing operations	56,495	147,149	136,101
Income (loss) from discontinued operations, net of income taxes	8,480	(38)	1,760
Net income	64,975	147,111	137,861
Income from continuing operations attributable to noncontrolling interest	34	86
Net income attributable to Advanced Energy Industries, Inc.	$ 64,941	$ 147,025	$ 137,861
Basic weighted-average common shares outstanding	38,281	39,081	39,754
Diluted weighted-average common shares outstanding	38,495	39,352	40,176
Earnings per share:
Continuing operations: Basic earnings per share	$ 1.47	$ 3.76	$ 3.42
Continuing operations: Diluted earnings per share	1.47	3.74	3.39
Discontinued operations: Basic earnings per share	0.22		0.04
Discontinued operations: Diluted earnings per share	0.22		0.04
Net income:
Basic earnings per share	1.70	3.76	3.47
Diluted earnings per share	$ 1.69	$ 3.74	$ 3.43
Product [Member]
Total sales, net	$ 678,061	$ 610,326	$ 578,650
Total cost of sales	416,976	298,597	267,587
Service [Member]
Total sales, net	110,887	108,566	92,362
Total cost of sales	$ 56,320	$ 54,688	$ 47,044