The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.

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The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.

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The increase in the fair value of plan assets from contributions made by the employer.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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The amount of increase or decrease in plan assets attributed to foreign currency changes. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency.

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The amount that relates to an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts.

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Pension and Other Post-retirement Benefit Plans - Fair Value (Details) - Pension - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 10,268	$ 10,483	$ 9,946
Actual return on plan assets	(46)	1,737
Employer contributions	1,528	1,303
Settlements	(30)	(39)
Benefits paid	(1,425)	(1,111)
Foreign currency exchange rate change	(242)	(1,353)
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	129	149
International equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,567	3,626
International bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6,469	6,132
Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	611	576
Mutual Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,492
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	129	149
Level 1 \| Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	129	149
Level 1 \| International equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 \| International bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 \| Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	9,528	9,758
Level 2 \| Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 2 \| International equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,567	3,626
Level 2 \| International bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6,469	6,132
Level 2 \| Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 2 \| Mutual Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,492
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	611	576	$ 706
Actual return on plan assets	14	39
Employer contributions	189	366
Settlements	0	0
Benefits paid	(202)	(375)
Foreign currency exchange rate change	34	(160)
Level 3 \| Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 \| International equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 \| International bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 \| Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 611	$ 576