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Inventory (Details) - USD ($)	Sep. 30, 2019	Mar. 31, 2019
Inventory - net [Abstract]
Raw materials	$ 104,180,000	$ 95,757,000
Work in process	4,720,000	3,502,000
Finished goods	154,901,000	146,366,000
Inventory, gross	263,801,000	245,625,000
Less allowance for excess and obsolete inventory	(13,134,000)	(11,899,000)
Total inventory - net	250,667,000	233,726,000
Inventory unreturned	$ 8,684,000	$ 8,469,000

X

- Definition

Carrying amount as of the balance sheet date of the added unit value of finished goods shipped to customers that the entity expects to be returned within the normal operating cycle of one year.

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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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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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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 raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount of valuation reserve for inventory.

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