Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenues	$ 309,166	$ 306,234
Cost of revenues	249,976	245,171
Gross profit	59,190	61,063
Operating expenses	49,084	51,929
Acquisition-related expenses	323	0
Restructuring charges	658	0
Operating income	9,125	9,134
Other income (expense):
Interest expense	(3,232)	(3,115)
Interest income	126	252
Other	(2,779)	(776)
Total other expense	(5,885)	(3,639)
Income before taxes on income	3,240	5,495
Taxes on income	1,868	1,612
Income before equity in earnings of affiliated companies	1,372	3,883
Equity in earnings of affiliated companies	0	677
Income from continuing operations	1,372	4,560
Loss from discontinued operations	0	(132)
Net income	1,372	4,428
Non-controlling interests	(13)	(31)
Net income attributable to Aegion Corporation	$ 1,359	$ 4,397
Basic:
Income from continuing operations (in dollars per share)	$ 0.04	$ 0.12
Loss from discontinued operations (in dollars per share)	$ 0.00	$ 0.00
Net income (in dollars per share)	$ 0.04	$ 0.12
Diluted:
Income from continuing operations (in dollars per share)	$ 0.04	$ 0.12
Loss from discontinued operations (in dollars per share)	$ 0.00	$ 0.00
Net income (in dollars per share)	$ 0.04	$ 0.12