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Troubled Debt Restructurings (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 loan contract	Mar. 31, 2012 loan	Dec. 31, 2012 contract
Troubled Debt Restructurings [Abstract]
Number of troubled debt restructured loans	23		23
Total troubled debt restructured loans	$ 8.2		$ 8.2
Number of loans restructured	1	1
Loan is considered payment default	30 days

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Number Of Troubled Debt Loans Restructured

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Period Past Due Loan Considered Payment Default

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953676-111524

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The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6951948&loc=d3e18845-111554

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