Inventories (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Mar. 31, 2014
Components of Inventories, valued using the first-in, first-out (FIFO) method
Raw materials	$ 97,824us-gaap_InventoryRawMaterials	$ 94,694us-gaap_InventoryRawMaterials
Work-in-process	116,524us-gaap_InventoryWorkInProcess	115,731us-gaap_InventoryWorkInProcess
Finished goods	274,547us-gaap_InventoryFinishedGoods	272,793us-gaap_InventoryFinishedGoods
Total	$ 488,895us-gaap_InventoryNet	$ 483,218us-gaap_InventoryNet

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

+ References

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-Publisher FASB

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

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