Note 2 - Accounting Policies (Details) - Financial Data for Variable Interest Entities - Income Statement (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012
Financial Data for Variable Interest Entities - Income Statement [Abstract]
Revenue	$ 38,429	$ 41,559
Gross profit	6,645	6,097
Net income	$ 467	$ 433

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