Defined Benefit Plan, Funded (Unfunded) Status of Plan (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 65,783	$ 67,529
Defined Benefit Plan, Benefit Obligation	(95,384)	(102,469)
Defined Benefit Plan, Funded (Unfunded) Status of Plan	$ (29,601)	$ (34,940)

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

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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.

+ References

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-Publisher FASB
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+ Details

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- Definition

Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

+ References

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