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Accumulated Other Comprehensive Loss - Schedule of Changes in Component of Accumulated Other Comprehensive Loss (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Equity [Abstract]
Net Unrealized Gains (Losses) on Securities, Beginning Balance	$ (1,129)	$ 1,770
Other comprehensive loss before reclassifications, Net Unrealized Gains (Losses) on Securities	682	(132)
Deferred tax adjustment, Net Unrealized Gains (Losses) on Securities	(232)
Change during period, Net Unrealized Gains (Losses) on Securities	450	(132)
Net Unrealized Gains (Losses) on Securities, Ending Balance	(679)	1,638
Adjustments Related to Pension Benefits, Beginning Balance	(175)	(2,629)
Other comprehensive loss before reclassifications, Adjustments Related to Pension Benefits
Deferred tax adjustment, Adjustments Related to Pension Benefits
Change during period, Adjustments Related to Pension Benefits
Adjustments Related to Pension Benefits, Ending Balance	(175)	(2,629)
Accumulated Other Comprehensive Loss, Beginning Balance	(1,304)	(859)
Other comprehensive loss before reclassifications, Accumulated Other Comprehensive Loss	682	(132)
Deferred tax adjustment, Accumulated Other Comprehensive Loss	(232)
Change during period, Accumulated Other Comprehensive Loss	450	(132)
Accumulated Other Comprehensive Loss, Ending Balance	$ (854)	$ (991)

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- Definition

Accumulated other comprehensive income change in cumulative translation adjustment.

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- Definition

Other comprehensive income change in pension and other postretirement benefit plans adjustment net of tax.

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Other comprehensive income deferred tax adjustment.

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Other comprehensive income deferred tax adjustment on available for sale securities net of tax.

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Other comprehensive income deferred tax adjustment on pension and other postretirement benefit plans adjustment net of tax.

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Other comprehensive income loss changes in unrealized gains and losses before tax.

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- Definition

Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

+ References

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-Publisher FASB

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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 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 after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities and unrealized holding gain (loss) related to transfers of securities into the available-for-sale classification and out of the held-to-maturity classification.

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax, before reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement benefit plans.

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