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Derivative Financial Instruments (Statement Of Operations Information) (Details) (Not Designated as Hedging Instruments [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative [Line Items]
Derivative financial instruments, net gain (loss) recognized	$ 3,413	$ 1,195	$ (9,924)
Foreign currency forward contracts [Member]
Derivative [Line Items]
Derivative financial instruments, net gain (loss) recognized	260	40	(662)
EuroDollar futures contracts [Member]
Derivative [Line Items]
Derivative financial instruments, net gain (loss) recognized		(30)	(2)
TBAs [Member]
Derivative [Line Items]
Derivative financial instruments, net gain (loss) recognized	$ 3,153	$ 1,185	$ (9,260)

X

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (a),(c),(d),(e)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

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Period Type:	duration

X

- Details

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