Note 2 - Accounting Policies (Details) - Financial Data for Variable Interest Entities - Income Statement (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Financial Data for Variable Interest Entities - Income Statement [Abstract]
Revenue	$ 20,624	$ 19,272
Gross profit	1,802	3,751
Net income	$ (571)	$ 1,056

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