Note 2 - Accounting Policies (Details) - Financial Data for Variable Interest Entities - Income Statement (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013
Financial Data for Variable Interest Entities - Income Statement [Abstract]
Revenue	$ 58,942	$ 62,650
Gross profit	9,370	10,179
Net income	$ 714	$ 2,040

Amount of the consolidated Variable Interest Entity's gross profit included in the reporting entity's statement of financial position.

No definition available.

Name:	aegn_VariableInterestEntitiesSummarizedFinancialInformationGrossProfitLoss
Namespace Prefix:	aegn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration