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Summary of Significant Accounting Policies (Details Textual) (USD $) | 12 Months Ended
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Sep. 30, 2013 Customer Segment | Sep. 30, 2012 Customer
Summary of Significant Accounting Policies (Textual) [Abstract] |  |
Number of segments in which company operates | 3 |
Allowance for doubtful accounts | $ 481,000 | $ 500,000
Accounts receivable, written off | 147,000 | 216,000
Bad debts expense | 81,000 | 107,000
Percentage of company's net sales from largest customers | 39.00% | 44.00%
Number of customer for company | 3 | 3
Additional percentage of combined net sales to various direct subcontractors | 60.00% | 70.00%
Number of Major Customers Having Specified Percentage of Accounts Receivable | 2 | 2
Number of largest customers | 4 | 4
Number of customers with major accounts receivable | 3 | 2
Percentage of inventory estimated using LIFO method | 36.00% | 47.00%
Reserve for obsolete and excess inventory | 1,394,000 | 1,192,000
Depreciation expense | 3,649,000 | 3,153,000
Interest rate swap agreement amount | 6,000,000 | 8,000,000
Foreign currency exchange contracts expiration (in years) | 1 year |
Summary of Significant Accounting Policies (Additional Textual) [Abstract] |  |
Foreign currency translation adjustment | 0 | 200,000
Net pension liability adjustment | 2,409,000 | 4,090,000
Net interest rate swap agreement adjustment | 16,000 | 35,000
Subsidiaries [Member] |  |
Summary of Significant Accounting Policies (Textual) [Abstract] |  |
Carrying value of property in corporate identifiable assets | 1,716,000 |
Rental income | 413,000 | 433,000
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) | 50 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] |  |
Tangible Asset Impairment Charges | $ 72 |
Machinery and equipment [Member] | Maximum [Member] |  |
Summary of Significant Accounting Policies (Textual) [Abstract] |  |
Property, plant and equipment, useful life (in years) | 30 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) | 5 years |
Software [Member] | Minimum [Member] |  |
Summary of Significant Accounting Policies (Textual) [Abstract] |  |
Property, plant and equipment, useful life (in years) | 1 year |
Leasehold Improvements [Member] | Maximum [Member] |  |
Summary of Significant Accounting Policies (Textual) [Abstract] |  |
Property, plant and equipment, useful life (in years) | 6 years |
Leasehold Improvements [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 | 16.00% | 17.00%
Additional percentage of combined net sales to various direct subcontractors | 21.00% | 23.00%
Percentage of company's outstanding net accounts receivable due from largest customers | 23.00% | 19.00%
Percentage of company's outstanding net accounts receivable due from direct subcontractors | 24.00% | 26.00%
Customer Two [Member] |  |
Summary of Significant Accounting Policies (Textual) [Abstract] |  |
Percentage of company's net sales from largest customers | 13.00% | 16.00%
Additional percentage of combined net sales to various direct subcontractors | 16.00% | 17.00%
Percentage of company's outstanding net accounts receivable due from largest customers | 13.00% | 16.00%
Percentage of company's outstanding net accounts receivable due from direct subcontractors | 14.00% | 18.00%
Customer Three [Member] |  |
Summary of Significant Accounting Policies (Textual) [Abstract] |  |
Percentage of company's net sales from largest customers | 10.00% | 11.00%
Additional percentage of combined net sales to various direct subcontractors | 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%

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