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Basis of Presentation - Inventories (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Percentage of weighted average cost inventory	75.00%
Inventory, Net [Abstract]
Purchased parts and raw materials	$ 12,297	$ 11,757
Work-in-process	2,970	7,104
Finished goods	2,081	3,140
Inventory	$ 17,348	$ 22,001

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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