Components of Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Components Of Net Periodic Pension Cost Details
Interest cost	$ 129	$ 127	$ 386	$ 394
Expected return on plan assets	(166)	(123)	(457)	(387)
Net amortization	101	108	305	324
Recognized settlement loss		64		629
Net periodic pension cost	64	176	234	960
Amortization of actuarial loss	(204)	(183)	(305)	(1,186)
Total recognized in other comprehensive income	(204)	(183)	(305)	(1,186)
Total recognized in net expense and OCI (before tax)	(140)	$ (7)	$ (71)	$ (226)
Defined Benefit Plan, Contributions by Employer	$ 2,000

Defined benefit plan amortization and deferral net.

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Defined benefit plan amounts recognized in net periodic benefit cost and other comprehensive income before tax.

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- Definition

Amount of contributions made by the employer to defined benefit plans.

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An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

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Amount of net gain (loss) recognized in net periodic benefit cost as a result of an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include, but are not limited to, lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contracts to cover vested benefits.

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- Definition

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

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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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