Note 2 - Accounting Policies (Details) - Financial Data for Variable Interest Entities - Income Statement (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financial Data for Variable Interest Entities - Income Statement [Abstract]
Revenue	$ 85,908	$ 107,821	$ 55,792
Gross profit	12,998	19,625	12,005
Net income	$ 1,892	$ 3,622	$ 1,959

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