Note 17. Share-Based Compensation (Details) - Stock Purchase Plan (Employee Stock [Member])	12 Months Ended
Dec. 31, 2013
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Period For Purchase	6 months
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date	85.00%

Discount rate from fair value on offering date that participants pay for shares.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration