XML 49 R45.htm IDEA: XBRL DOCUMENT v2.4.0.6

Fair Value (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012
Fair Value [Abstract]
Fair value of public equity portfolio	$ 52,009

X

- Definition

Public equity portfolio fair value disclosure.

+ References

No definition available.

+ Details

Name:	cik0000914748_PublicEquityPortfolioFairValueDisclosure
Namespace Prefix:	cik0000914748_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FairValueDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration