Note 2 - Accounting Policies (Details) - Financial Data for Variable Interest Entities - Balance Sheet (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Financial Data for Variable Interest Entities - Balance Sheet [Abstract]
Current assets	$ 54,099	$ 55,960
Non-current assets	46,087	47,606
Current liabilities	24,837	27,335
Non-current liabilities	$ 36,070	$ 36,761

The carrying amount of the consolidated Variable Interest Entity's current liabilities included in the reporting entity's statement of financial position.

No definition available.

Name:	aegn_VariableInterestEntityConsolidatedCarryingAmountCurrentLiabilities
Namespace Prefix:	aegn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant