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Employee Benefit Plans (Fair Value of Plan Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning of year	$ 84,718	$ 71,376
Actual return on plan assets	3,350	1,824
Employer contributions	6,383	5,995
Plan participant contributions	3,666	3,522
Benefits paid	(3,793)	(1,202)
Settlement and curtailment	(335)	0
Administrative expenses paid	(142)	(144)
Currency exchange rate changes	(3,482)	3,347
Fair value of plan assets, end of year	$ 90,365	$ 84,718

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- Definition

Defined Benefit Plan, Plan Assets, Period Increase (Decrease) From Settlement And Curtailment

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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.

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Amount of administration expense of defined benefit plan which decreases plan assets. Excludes plan administration expense paid by employer.

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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 asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan.

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