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9. Employee Benefits (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Components of net periodic cost (benefit)
Service cost	$ 0	$ 0
Interest cost	194	214
Expected return on assets	(291)	(287)
Amortization of transition (asset)/obligation	0	0
Amortization of net (gain)/loss	111	101
Net periodic cost (benefit)	$ 14	$ 28

X

- Definition

Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.

+ References

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Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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Amount of transition asset (obligation) recognized in net periodic benefit (cost) credit of defined benefit plan.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of cost recognized for passage of time related to defined benefit plan.

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Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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