Note 9. Shareholders' Equity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net of tax, beginning	$ (267,802)	$ (450,099)	$ (269,531)	$ (456,461)
Other comprehensive income (loss), before reclassifications	(891)	305	(1,208)	563
Amounts reclassified from accumulated other comprehensive income	1,259	3,051	3,305	9,155
Accumulated other comprehensive loss, net of tax, ending	(267,434)	(446,743)	(267,434)	(446,743)
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net of tax, beginning	(741)	(1,037)	(424)	(1,295)
Other comprehensive income (loss) before reclassification	(891)	305	(1,208)	563
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Accumulated other comprehensive loss, net of tax, ending	(1,632)	(732)	(1,632)	(732)
Employee Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net of tax, beginning	(267,061)	(449,062)	(269,107)	(455,166)
Other comprehensive (income) loss before reclassification	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	1,259	3,051	3,305	9,155
Accumulated other comprehensive loss, net of tax, ending	$ (265,802)	$ (446,011)	$ (265,802)	$ (446,011)

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount before tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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- Definition

Amount after tax of reclassification adjustment from accumulated other comprehensive income for translation gain (loss) realized upon the sale or liquidation of an investment in a foreign entity and foreign currency hedges that are designated and qualified as hedging instruments for hedges of the foreign currency exposure of a net investment in a foreign operation.

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