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Accumulated Other Comprehensive Loss (Reclassifications out of Accumulated Comprehensive Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Equity [Abstract]
Prior service cost	$ 13	$ 40
Amortization of actuarial loss	191	153
Total before tax	204	193
Income tax benefit	(73)	(72)
Amount reclassified out of accumulated other comprehensive loss	$ 131	$ 121

Amount before tax of cost (credit) of benefit changes attributable to plan participants' prior service resulting from a plan amendment or plan initiation that has not been recognized in net periodic benefit cost (credit).

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- Definition

Amount before tax of (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit.

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