Business Interruption Insurance Recovery (Details) (USD $)	3 Months Ended
Mar. 31, 2013
Business Interruption Insurance Recovery [Abstract]
BusinessInterruptionInsuranceRevenue	$ 835,000

Revenue received for business interruption insurance recovery.

No definition available.

Name:	ebs_Businessinterruptioninsurancerevenue
Namespace Prefix:	ebs_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration