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Note 12 - Retirement Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
UNITED STATES
Service cost	$ 1	$ 1
Interest cost	2,271	2,586
Expected return on plan assets	(3,288)	(3,385)
Recognized net actuarial loss	1,275	1,030
Net periodic benefit cost	$ 259	$ 232
Foreign Plan [Member]
Service cost			$ 10	$ 9
Interest cost			205	254
Expected return on plan assets			(211)	(228)
Recognized net actuarial loss			158	86
Net periodic benefit cost			$ 162	$ 121

X

- Definition

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

+ References

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-Publisher FASB
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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 cost recognized for passage of time related to defined benefit plan.

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Amount of net periodic benefit cost (credit) for 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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