Summary of Significant Accounting Policies (Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Component of Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gains on investment securities available for sale, net of income taxes of $26,749, $8,886, and $14,938, respectively	$ 39,136	$ 13,001	$ 21,856
Net unrealized losses on long-term investment accounted for under the equity method, net of income tax benefits of $418, $458 and $1,007, respectively	(612)	(670)	(1,474)
Forward contracts adjustment, net of income taxes of $63, $88, and $114, respectively	(92)	(129)	(167)
Pension-related amounts, net of income taxes of $10,644, $15,358, and $16,330, respectively	(15,572)	(22,470)	(23,892)
Accumulated other comprehensive (loss) income	22,860	(10,268)	(3,677)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Component of Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive (loss) income, tax effect	26,749	8,886	14,938
Accumulated Net Unrealized Long-Term Equity Method Investment Gain (Loss) [Member]
Component of Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive (loss) income, tax effect	418	458	1,007
Accumulated Translation Adjustment [Member]
Component of Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive (loss) income, tax effect	63	88	114
Accumulated Defined Benefit Plans Adjustment [Member]
Component of Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive (loss) income, tax effect	$ 10,644	$ 15,358	$ 16,330

The total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

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Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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- Definition

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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