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Note 8 - Accrued Retirement Benefits - Net Periodic Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interest cost	$ 495	$ 560	$ 1,485	$ 1,680
Expected return on plan assets	(578)	(562)	(1,734)	(1,686)
Amortization of net loss	185	204	555	612
Pension and other postretirement expenses	$ 102	$ 202	$ 306	$ 606

X

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

+ References

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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