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Supplemental Financial Information (Details) (USD $) In Thousands, unless otherwise specified			6 Months Ended
	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2014 Minimum Property and equipment	Sep. 30, 2014 Maximum Property and equipment
Inventories
Materials and supplies	$ 1,010	$ 1,320
Work in process	301	175
Finished goods	956	1,051
Total inventories	$ 2,267	$ 2,546
Property and Equipment
Useful life			3 years	8 years

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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