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Fair Value Measurements Fair Value Measurements (Narrative) (Details) (Convertible Junior Subordinated Debenture, USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Convertible Junior Subordinated Debenture
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of convertible junior subordinated debentures	$ 89.8

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- Definition

Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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