Supplemental Balance Sheet Disclosures (Details) (USD $)	3 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013
Supplemental Balance Sheet Disclosures
Unbilled receivables, net of customer payments	$ 7,314,710		$ 6,539,442
Inventories
Raw materials	3,624,157		3,126,592
Work-in-process	1,123,403		857,602
Finished goods	227,981		393,319
Inventory	4,975,541		4,377,513
Prepaid expenses and other current assets
Prepaid insurance	186,743		350,913
Other	326,531		291,297
Total	513,274		642,210
Unbilled receivables
Change in operating income resulting from revised estimates	(1,408,624)	(384,591)
Contracts accounted for under percentage of completion
Unbilled receivables
Change in operating income resulting from revised estimates	$ 183,000	$ 0

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