Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ (7,990)	$ (35,412)	$ 45,546
Other comprehensive income (loss):
Currency translation adjustments		(25,379)	(27,591)	(13,428)
Pension activity, net of tax	[1]	145	(576)	38
Deferred gain (loss) on hedging activity, net of tax	[2]	279	296	(255)
Total comprehensive income (loss)		(32,945)	(63,283)	31,901
Less: comprehensive income (loss) attributable to noncontrolling interests		1,686	(605)	(749)
Comprehensive income (loss) attributable to Aegion Corporation		$ (31,259)	$ (63,888)	$ 31,152

[1] Amounts presented net of tax of $37, $(158) and $11 for the years ended December 31, 2015, 2014, and 2013, respectively.

[2] Amounts presented net of tax of $187, $196 and $(168) for the years ended December 31, 2015, 2014 and 2013, respectively.