Non-Controlling Interest - Operating Partnership (Details) (Noncontrolling Interest [Member])	0 Months Ended	6 Months Ended
Jan. 02, 2013	Jun. 30, 2013
Noncontrolling Interest [Member]
Noncontrolling Interest [Line Items]
Operating Partnership Units Issued	212,000
Holding Period Operating Partnership Units		2 years
Operating Partnership Units		212,000
Ownership Percentage		1.00%

Holding period (subject to certain restrictions) for Operating Partnership Units (issued on January 1, 2013) until eligible for conversion to common shares on a one-for-one basis.

No definition available.

Name:	efc_HoldingPeriodOperatingPartnershipUnits
Namespace Prefix:	efc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration