Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Components of accumulated other comprehensive loss, net of related tax benefit/expense
Net unrealized gains (losses) on investment securities – available-for-sale, net of related tax expense (benefit) of $(148) at June 30, 2015, $(113) at December 31, 2014 and $431 at June 30, 2014	$ (274)	$ (210)	$ 800
Pension and other postretirement benefits adjustment, net of related tax benefit of $16,601 at June 30, 2015, $17,362 at December 31, 2014 and $10,117 at June 30, 2014	(30,830)	(32,243)	(18,788)
Accumulated other comprehensive loss	$ (31,104)	$ (32,453)	$ (17,988)

- 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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