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2409406 - Disclosure - Equity-based Compensation - Binomial Option-Pricing Model Assumptions (Details)
(http://www.aegion.com/role/EquityBasedCompensationBinomialOptionPricingModelAssumptionsDetails)
TableSchedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000353020 (http://www.sec.gov/CIK)
Award Type [Axis]Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]Period [Axis]
2014-01-01 - 2014-12-31
Grant-date fair value (in Dollars per share)
11.27  
Volatility (as a percent)
41.60%  
Expected term
P7Y  
Dividend yield (as a percent)
0.00%  
Risk-free rate (as a percent)
2.30%