Supplemental Balance Sheet Disclosures (Details) (USD $)	3 Months Ended	6 Months Ended
Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Sep. 30, 2013
Supplemental Balance Sheet Disclosures
Unbilled receivables, net of customer payments	$ 8,260,342		$ 8,260,342		$ 6,539,442
Inventories
Raw materials	3,784,599		3,784,599		3,126,592
Work-in-process	1,377,674		1,377,674		857,602
Finished goods	243,100		243,100		393,319
Inventory	5,405,373		5,405,373		4,377,513
Prepaid expenses and other current assets
Prepaid insurance	359,670		359,670		350,913
Other	304,787		304,787		291,297
Total	664,457		664,457		642,210
Unbilled receivables
Change in operating income resulting from revised estimates	(1,089,640)	(1,210,837)	(2,498,264)	(1,595,427)
Contracts accounted for under percentage of completion
Unbilled receivables
Change in operating income resulting from revised estimates	$ 443,000	$ 328,000	$ 614,000	$ 112,000

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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