Note 2 - Accounting Policies (Detail) - Financial Data for Variable Interest Entities (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011
Revenue	$ 41,559	$ 24,471
Gross profit	6,097	2,240
Net income (loss)	$ 433	$ (661)

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