Note 2 - Accounting Policies (Detail) - Financial Data for Variable Interest Entities - Income Statement (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011
Revenue	$ 74,313	$ 36,241
Gross profit	11,361	4,650
Net income (loss)	$ 1,391	$ (1,132)

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