Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Revenues	$ 337,096	$ 322,868	$ 646,262	$ 629,102
Cost of revenues	265,043	250,950	515,019	496,121
Gross profit	72,053	71,918	131,243	132,981
Operating expenses	57,326	50,760	106,410	102,689
Acquisition-related expenses	0	539	323	539
Restructuring charges	204	0	862	0
Operating income	14,523	20,619	23,648	29,753
Other income (expense):
Interest expense	(2,989)	(3,320)	(6,221)	(6,435)
Interest income	78	125	204	377
Other	778	(687)	(2,001)	(1,463)
Total other expense	(2,133)	(3,882)	(8,018)	(7,521)
Income before taxes on income	12,390	16,737	15,630	22,232
Taxes on income	3,542	3,961	5,410	5,573
Income before equity in earnings of affiliated companies	8,848	12,776	10,220	16,659
Equity in earnings of affiliated companies	0	0	0	677
Income from continuing operations	8,848	12,776	10,220	17,336
Loss from discontinued operations	0	(364)	0	(496)
Net income	8,848	12,412	10,220	16,840
Non-controlling interests	(164)	(26)	(177)	(57)
Net income attributable to Aegion Corporation	$ 8,684	$ 12,386	$ 10,043	$ 16,783
Basic:
Income from continuing operations (in dollars per share)	$ 0.24	$ 0.34	$ 0.27	$ 0.46
Loss from discontinued operations (in dollars per share)	0.00	(0.01)	0.00	(0.01)
Net income (in dollars per share)	0.24	0.33	0.27	0.45
Diluted:
Income from continuing operations (in dollars per share)	0.24	0.33	0.27	0.45
Loss from discontinued operations (in dollars per share)	0.00	(0.01)	0.00	(0.01)
Net income (in dollars per share)	$ 0.24	$ 0.32	$ 0.27	$ 0.44