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Inventories, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Notes To Financial Statements [Abstract]
Inventory, Raw Materials	$ 83,009	$ 83,741
Inventory, Work in Process	30,694	34,904
Inventory, Finished Goods	131,051	124,005
Inventory, LIFO Reserve	(16,757)	(17,280)
Inventory Valuation Reserves	(19,754)	(19,639)	$ (17,854)	$ (18,707)
Inventories, net	$ 208,243	$ 205,731

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Notes to Financial Statements [Abstract]

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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