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Pension (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Pension [Abstract]
Expected pension expense	$ 680
Pension expense	$ 171	$ 120	$ 421

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- References

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- Definition

Amount of contributions received and expected to be received by defined benefit plan from employer in current fiscal year.

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

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