Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income (loss)		$ (30,356)	$ (19,448)	$ 3,087
Other comprehensive income (loss):
Currency translation adjustments		7,432	13,915	(14,651)
Deferred loss on hedging activity, net of tax (1)	[1]	(4,496)	(6,237)	(1,621)
Pension activity, net of tax (2)	[2]	(138)	(33)	(654)
Total comprehensive loss		(27,558)	(11,803)	(13,839)
Comprehensive income attributable to non-controlling interests		(1,456)	(1,493)	(1)
Comprehensive loss attributable to Aegion Corporation		$ (29,014)	$ (13,296)	$ (13,840)

[1] Amounts presented net of tax of $0, $164 and $(48) for the years ended December 31, 2020, 2019 and 2018, respectively.

[2] Amounts presented net of tax of $(33), $8 and $(134) for the years ended December 31, 2020, 2019 and 2018, respectively.