Summary of Significant Accounting Policies (Details Textual) (USD $)	12 Months Ended
	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%