Summary of Significant Accounting Policies (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2014 Customer	Sep. 30, 2013 Segment Customer	Sep. 30, 2012 Customer
Summary of Significant Accounting Policies (Textual) [Abstract]
Number of segments in which company operates		2
Allowance for doubtful accounts	$ 333	$ 481
Accounts receivable, written off	158	147
Bad debts expense	9	81	107
Percentage of company's net sales from largest customers	37.00%	39.00%	44.00%
Number of customer for company		3	3
Additional percentage of combined net sales to various direct subcontractors	50.00%	60.00%	70.00%
Number of largest customers	3	4	4
Number of major customers having specified percentage of accounts receivable		2
Number of customers with major accounts receivable	2	3
Percentage of inventory estimated using LIFO method	40.00%	36.00%
Reserve for obsolete and excess inventory	1,407	1,394
Depreciation expense	4,735	3,649	3,153
Rental income, quarterly installment	103
Foreign currency exchange contracts expiration (in years)	1 year
Subsidiaries [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Carrying value of property in corporate identifiable assets	1,643	1,716
Rental income	413	413	433
Maximum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Intangible assets amortized over useful lives (in years)	10 years
Minimum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Intangible assets amortized over useful lives (in years)	1 year
Building and Building Improvements [Member] \| Maximum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Property, plant and equipment, useful life (in years)	40 years
Building and Building Improvements [Member] \| Minimum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Property, plant and equipment, useful life (in years)	5 years
Machinery and equipment [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Impairment charge		72
Machinery and equipment [Member] \| Maximum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Property, plant and equipment, useful life (in years)	20 years
Machinery and equipment [Member] \| Minimum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Property, plant and equipment, useful life (in years)	3 years
Software [Member] \| Maximum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Property, plant and equipment, useful life (in years)	7 years
Software [Member] \| Minimum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Property, plant and equipment, useful life (in years)	3 years
Customer One [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Percentage of company's net sales from largest customers	14.00%	16.00%	17.00%
Additional percentage of combined net sales to various direct subcontractors	24.00%	21.00%	23.00%
Percentage of company's outstanding net accounts receivable due from largest customers	13.00%	23.00%
Percentage of company's outstanding net accounts receivable due from direct subcontractors	27.00%	24.00%
Customer Two [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Percentage of company's net sales from largest customers	12.00%	13.00%	16.00%
Additional percentage of combined net sales to various direct subcontractors	15.00%	16.00%	17.00%
Percentage of company's outstanding net accounts receivable due from largest customers	10.00%	13.00%
Percentage of company's outstanding net accounts receivable due from direct subcontractors	14.00%	14.00%
Customer Three [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Percentage of company's net sales from largest customers	11.00%	10.00%	11.00%
Additional percentage of combined net sales to various direct subcontractors	11.00%	13.00%	16.00%
Percentage of company's outstanding net accounts receivable due from direct subcontractors		11.00%
Customer Four [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Additional percentage of combined net sales to various direct subcontractors		10.00%	14.00%
Interest Rate Contract [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Interest rate swap agreement amount	$ 4,000	$ 6,000

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Additional percentage of accounts receivable to direct subcontractors of major customers.

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Bad debts expense.

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Entity wide accounts receivable major customer percentage.

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Non-operating property asset value.

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Number Of Customers With Major Accounts Receivable

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Number of major customer.

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Number of major customers having specified percentage of revenue.

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Rental Income, Quarterly Installment

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For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

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Amount of direct write-downs of accounts receivable charged against the allowance.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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High end period remaining until maturity for the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of valuation reserve for inventory.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Income earned by providing the use of assets to an outside party in exchange for a payment or series of payments that is nonoperating in nature.

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The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

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