Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Revenues	$ 293,908	$ 309,166
Cost of revenues	239,494	249,976
Gross profit	54,414	59,190
Operating expenses	50,725	49,084
Acquisition-related expenses	1,031	323
Restructuring charges	6,797	658
Operating income (loss)	(4,139)	9,125
Other income (expense):
Interest expense	(3,615)	(3,232)
Interest income	32	126
Other	(973)	(2,779)
Total other expense	(4,556)	(5,885)
Income (loss) before taxes on income	(8,695)	3,240
Taxes (benefit) on income (loss)	(4,746)	1,868
Net income (loss)	(3,949)	1,372
Non-controlling interests	157	(13)
Net income (loss) attributable to Aegion Corporation	$ (3,792)	$ 1,359
Earnings (loss) per share attributable to Aegion Corporation:
Net income per share, basic (in dollars per share)	$ (0.11)	$ 0.04
Net income per share, diluted (in dollars per share)	$ (0.11)	$ 0.04