Detail of Selected Balance Sheet Accounts (Components of Inventories) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Balance Sheet Related Disclosures [Abstract]
Raw materials, parts and subassemblies	$ 35,349	$ 30,077
Work-in-progress	2,035	3,818
Provision for excess and obsolete inventory	(4,569)	(4,932)
Total inventories	$ 32,815	$ 28,963

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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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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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Amount of valuation reserve for inventory.

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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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